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Troubleshooting

Common issues and solutions for using Rembrandt.

Signing in

Can't sign in

Problem: Unable to sign in to your account.

Solutions:

  • Check that you're using the correct email address

  • If you signed up with Google, use the Sign in with Google button instead of email/password

  • Try resetting your password using the "Forgot password" link

  • If your organization requires two-factor authentication, have your authenticator app to hand. Password sign-ins ask for a code

  • Ensure you're going to the correct Rembrandt login page

  • Clear your browser cookies and try again

Sign-up says an invite is required

Problem: The sign-up page shows a notice that Rembrandt is invite-only.

Solutions:

  • Sign up from the link in your invitation email, not from the sign-up page directly

  • Use the exact email address the invitation was sent to

  • Ask an Owner or Admin in your organization to resend the invite from Settings > Organization > Members > Invites

Email verification not arriving

Problem: Not receiving the verification email or the link has expired.

Solutions:

  • Check your spam/junk folder

  • Request a new verification email from the login page

  • Verify you entered the correct email address during signup

  • If using a corporate email, check with your IT team that emails from Rembrandt are not blocked

  • Contact support if emails continue to not arrive

Stuck on setup

Problem: Seeing setup screens or redirected back to onboarding after signing in.

Solutions:

  • Complete email verification first. This is required before anything else

  • Fill in your personal details (first name, last name)

  • Complete two-factor enrolment if your organization requires it

  • Select your organization

  • See the Getting Started for the full setup flow

Access and permissions

Can't select an organization

Problem: Unable to select an organization during setup.

Solutions:

  • Ensure your email is verified

  • Check your email for the invitation link and accept it first

  • Contact support if you don't see your expected organization

Missing features or settings

Problem: Can't find settings or features that should be available.

Solutions:

  • Organization settings (Members, Security, Timezone, API Tokens, Integrations, Sales, Contacts) are only visible to Owners and Admins. If you have an Editor or Viewer role, ask your admin.

  • The whole Configuration section of the sidebar (Pain clusters, Domains, Frameworks, Agents) is Owner/Admin only, and the pages behind it are blocked for other roles too.

  • Sales > Analytics follows the per-stage Analytics access toggle under Settings > Organization > Sales > Pipeline: there is no admin override on the menu entry. If nobody can see Analytics, an admin needs to enable it on at least one stage.

  • Some surfaces are switched off by default and enabled per deployment: Marketing, Contacts (the sidebar entry), Contact Sync, Title families and Search filters, Sales suppression, and Single Sign-On. If one of these is missing entirely, it isn't enabled for your organization, ask support.

  • If you should have access but don't, ask your organization Owner or Admin to check your role

Can't invite members

Problem: Don't see the option to invite team members.

Solutions:

  • Only Owners and Admins can invite members

  • Go to Settings > Organization > Members and click Invite Member

  • If you don't see this option, your role may be Editor or Viewer. Ask an Owner or Admin to invite on your behalf

AI assistants

MCP not connecting

Problem: Unable to connect Rembrandt to Claude Desktop or ChatGPT via MCP.

Solutions:

  • Make sure you have the correct MCP server URL: https://mcp.rembrandtagents.com (the API host, api.rembrandtagents.com, does not serve MCP)

  • Verify you completed the authorization flow and have a valid token

  • For Claude Desktop: restart Claude Desktop after making configuration changes

  • For ChatGPT: check that the Custom Connector was saved successfully

  • Re-authorize the connection if your token has expired

  • See the MCP Integration Guide for step-by-step instructions

MCP returning errors

Problem: MCP is connected but queries return errors.

Solutions:

  • Check that your Rembrandt account has an active organization selected

  • Ensure your account setup is complete (email verified, profile filled in)

  • Try re-authorizing the MCP connection

  • Contact support if errors persist

REST API

API key not working

Problem: REST API calls return authentication errors.

Solutions:

  • Verify your API key starts with rk_ and is copied correctly (no extra spaces)

  • Check that you're using the Authorization: Bearer rk_your_key header

  • Ensure the API key hasn't been revoked. Check Settings > Organization > API Tokens

  • API keys are scoped to an organization. Make sure you're using a key for the correct organization

  • See the API Integration Guide for details

API rate limiting

Problem: Receiving 429 "Too Many Requests" responses.

Solutions:

  • Check the X-RateLimit-Remaining-Key (per key) and X-RateLimit-Remaining-Org (per organization) response headers to see your remaining quota

  • Wait until the matching X-RateLimit-Reset-Key / X-RateLimit-Reset-Org timestamp before retrying

  • Spread your requests over time rather than sending them in bursts

  • Contact support if you need higher rate limits

CRM

HubSpot not syncing

Problem: Data is not syncing between Rembrandt and HubSpot.

Solutions:

  • Check the connection status and its granted permissions in Settings > Organization > Integrations

  • A granted permission is not the same as an enabled feature. Contact sync is switched on separately under Settings > Organization > Contacts > Contact Sync (only present when live CRM contact sync is enabled for your deployment)

  • Try disconnecting and reconnecting HubSpot. Older connections predate the Contact access permission

  • Ensure the HubSpot user who authorized the connection has sufficient permissions

  • See the HubSpot Integration Guide and the DMU guide for details

Something is not loading

Pages not loading

Problem: Pages show errors or don't load.

Solutions:

  • Refresh the page

  • Clear your browser cache and cookies

  • Try a different browser (Rembrandt works best in Chrome, Firefox, Safari, and Edge)

  • Check your internet connection

  • Contact support if the issue persists

Data not appearing

Problem: A page shows no data.

Solutions:

  • Verify your account setup is complete

  • Check that you have the correct organization selected (use the sidebar switcher)

  • If you're new, data may not have been generated yet. Ensure you have agents configured and running

  • Sales > Funnel is territory-scoped: it only shows accounts you are assigned to. Ask an admin to check your account assignments.

  • Check your role. Viewers can see data but Editors and above are needed to create it

  • Contact support to verify your account status

Need help

If you've tried the solutions above and still need help:

  1. Check the documentation

  2. Use in-app help

    • Click the Help button in the sidebar to reach our support team directly

  3. Contact support

    • Email: support@rembrandtagents.com

    • Include details about what you were trying to do, any error messages you saw, and steps you've already tried

    • Screenshots are very helpful