I’ve seen that “error getting your inbox” message a few times, and it usually comes down to a WooCommerce REST API or transient caching issue — especially when running multisite. Clearing transients manually (wp transient delete --all) and refreshing the WooCommerce dashboard fixed it for me.
Also, make sure the REST API endpoints are accessible and not being blocked by your maintenance mode or security rules. Sometimes even when all plugins are off, a leftover .htaccess rule or CDN cache can cause that same error.
Had a similar setup issue on Tint Veteran when running WooCommerce on a subdomain — cleaning up REST routes and refreshing permalinks sorted it out completely.
