 Check that API client is properly configured in Portal settings Verify server PHP/cURL can reach the Portal API server If caching is enabled, wait for cache expiration or disable APMC_DISABLE_EXCHANGE_CACHE Check error logs for API connectivity issues Problem: Currency field missing from Portal client edit form Verify Multi-Currency plugin is active and enabled Ensure at least one currency is configured in Invoices > Currencies Check that Portal plugin is active and client editing is available Clear browser cache and refresh the Portal client edit page