MCP Server — "Board access denied" + empty space_list even after full reconnect, single-team Free account

Using Miro MCP connected via Claude.ai (Free plan, single team, account owner of the board in question).

• space_list consistently returns empty ({"data": [], "has_more": false}), even immediately after fully disconnecting and reconnecting the connector from the Claude side.
• Attempting to read a board I own (https://miro.com/app/board/uXjVJOwQIdA=/) via context_get / canvas_read_as_svg / layout_read alternates between two errors: "Board access denied" and "The connector's server isn't responding. You can try again."
• Board is shared with "Anyone with the link → Viewer", no explicit collaborators invited yet ("Aún no has invitado a nadie a tu equipo" shown in Share panel).
• Ruled out per your troubleshooting doc: not a multi-team issue (only one team on this account); not a plan restriction (docs state MCP works on Free plans).

Can you check server-side logs for this account/board pairing to see what's blocking access?