Exception is thrown when incorrect API details are provided.

[elliott-stocks]

If API details are incorrect an exception is thrown (GoCardless_ApiException), and the user is unable to change the settings without manually going into the database.

Proposed solution:

try {
    // Initialize library
    GoCardless::set_account_details(array(
      'app_id'        => $gocardless_config['app_id'],
      'app_secret'    => $gocardless_config['app_secret'],
      'merchant_id'   => $gocardless_config['merchant_id'],
      'access_token'  => $gocardless_config['access_token'],
      'ua_tag'        => 'gocardless-wp/v' . GC_WP_VERSION
    ));
} catch (GoCardless_ApiException $e) {
    echo 'API details are incorrect, please check and try again (see error below)';
    echo $e->getMessage();
} 

However this solution still doesn't catch the exception, maybe something in the GoCardless library handling exceptions? I'm not too sure as I'm not too familiar with exceptions.