Mobile App: Invalid Special Character

The error message Invalid special character in Access Key occurs if unsupported characters are detected in the access key entered into the WHMCS Mobile App. To resolve, please follow these steps:

1. Open the configuration.php file found in your WHMCS installation directory using a text editor
2. Look for the $api_access_key variable
3. Remove or replace any unsupported characters
4. Acceptable characters in the API Access Key are:
   • Letters,
   • Numbers,
   • Acceptable Special Characters are:
     ! @ # $ % . ( ) * [ ] - _
5. Save changes to the configuration.php file and upload to your server
6. Return to the WHMCS Mobile App and re-enter the updated API Access Key value
7. Click the Validate Credentials button to test the connection

Upon success, the connection profile will be created and saved and you will be redirected to the app dashboard.