Registration form fields not showing

Hi,

currently im facing the following problem on the website of my client:

The registration form is showing the registration header, the opt in checkbox(gotowebinar_opt_in) and the submit button. But for whatever reason the the form fields (firstname, lastname, email etc.) is missing. After i clear the cache it’s showing the fields again but on the next day the fields are missing again (and now im unable to clear the cache).

I debugged your code in inc/shortcode-registration.php line 260

//establishing of transients and ajax request for form fields

$transientNameForm = 'gtw_for_'.current_time( 'd', $gmt = 0 ).'_'.$a['key'];

$getTransientForm = get_transient($transientNameForm);

if ($getTransientForm != false){

$jsondataform = $getTransientForm;

} else {

list($access_token,$organizer_key) = wp_gotowebinar_get_access_and_refresh_token();

$json_feed_form = wp_remote_get( wpgotowebinar_api_base().'/organizers/'.$organizer_key.'/webinars/'.$a['key'].'/registrants/fields', array(

'headers' => array(

'Authorization' => $access_token,

),));

$jsondataform = json_decode(preg_replace('/("\w+"):(\d+(\.\d+)?)/', '\\1:"\\2"', wp_remote_retrieve_body( $json_feed_form )), true);

set_transient($transientNameForm,$jsondataform, 86400);

}

When i dump the $getTransientForm it’s giving a json with the following information:
error code: 429
message: Rate limit spike arrest

after i forced your code to go once into the else{} statement and skipping get_transient part, the form worked again.
Now for the moment $getTransientForm contains the correct fields and the registration is working again.

Is there any way to resolve this issue?