Fixed: Improved OAuth token refresh handling to better distinguish temporary and permanent authentication issues, normalize varying authentication responses, and avoid unnecessary reauthorization.

Added: Database schema validation to help ensure the add-on is properly configured.

Updated: Improved account and property lookup error handling so invalid inputs and failed requests stop processing instead of returning empty results.

Updated: Refined scheduled data refreshes with temporary locking to prevent duplicate processing and skip OAuth tokens that are still valid.

Updated: Google Analytics OAuth tokens are now refreshed before Pro Reports resume sending to help prevent report delivery interruptions.