Yada shows a repair warning when the saved Guesty token is no longer valid. Create a fresh token in Guesty, then replace it in Yada.

Sign in to Guesty with an account that can manage Marketplace integrations and open the Marketplace.

Search for Yada and open its marketplace entry.

Select Connect and copy the complete Integration Token. Treat it as a password.

Open Settings → Integrations and select Guesty.

Paste the new token into the Repair connection field and select Repair.

When the status returns to Connected, open Settings → PMS Sync and run the relevant catch-up synchronization if data was missed while the token was invalid.