Rovo MCP Trello connector verification fails w/Grok – org-level perm / OAuth consent issue on Free

[Natural Muse]

I am the site administrator for my Atlassian organization. I am attempting to use the Atlassian Rovo MCP server connector with xAI Grok (console.x.ai / grok.com).

All user-facing configuration steps have been completed successfully on both the Atlassian and xAI sides:

• Domain naturalmuse.com is verified and listed under Domains.
• Permissions are fully granted: 8/8 Read, 8/8 Write, 3/3 Search.
• Authentication tab shows API token and enterprise managed auth both Off; no active sessions.
• Organization data contribution setting has been reviewed and set to Off (no data included).
• The connector was completely removed from the xAI Connectors page and re-added via a fresh OAuth consent flow initiated from console.x.ai. The consent screen showed the console.x.ai domain and all 13 requested permissions were selected. xAI reported successful addition and successful reauthentication on every subsequent attempt.

It specifically tells me when setting up the connector that it has completed successfully in Grok after I click on the Atlassian page that pops up and asks me to grant it access for my domain.

Despite the above, every tool call from Grok (specifically trello___getAccessibleAtlassianResources and trello___atlassianUserInfo) continues to return the identical error:

“We couldn't verify your connection settings. Please contact your administrator for assistance.”

This error persists after multiple re-authentication cycles and a full wipe/re-add. Front-end configuration on both platforms appears complete and correct. The failure appears to be occurring in the backend token verification / resource handshake between xAI and Atlassian.

Can anyone help point me in the right direction?

I have attempted to inspect organization-level connection state, any cached tokens, or policy that may be blocking the verified Rovo MCP integration with the console.x.ai / grok.com domains. As this is a Free-plan workspace I do not appear to have access to the deeper organization controls or the ability to open a formal support ticket.

Thanks in advance to anyone who takes the time to read through this and attempt to help,

Josh