Module development and code questions

Hi,

I am using Mpdf to download texts in pdf format. All the texts that are in english are getting downloaded properly. But I have texts in other languages, after download they show garbage. 

Please let me know how this can be fixed. Thanks

I have a content type which has a taxonomy term field called 'field_uni_taxonomy'
How can I print the value of this field in my template on the front end?

Seems, that Embed Video doesn't work with Youtube. I inserted code in field and published it. But I have blank screen. Only title. This trouble not with browser. 

Good morning,

We are rebuilding a webform and want to show the our users the current amount of Submissions and the Total submission limit. This is important as we want to show how many course seats are left.

Is there a way to get the Total submission limit value and add this field to the page details?

Thank you in advance.

Regards,
Danny

I created new custom layout module.

I would like to add a media field as configuration.

The first filed I added was of type select and it works well. (See background_color below).

I would like to add media field (See background_image below), but it not showing on the add/edit section form.

Is there a way to use file field or media field in custom layout configuration?

Drupal 8.8.2

Hello,

We are building an iOS/Android game and we're looking to use Drupal as the back end (via REST services).  I am trying to find documentation on how to connect Game Center (iOS) or Google Play Games as the authentication provider.  This means I want the user to go to our game, click the Game Center icon and be able to authenticate with Game Center, then create a Drupal account if one doesn't already exist, then log the user in to Drupal.  

I assume this is possible in Drupal, but I have not been able to find any tutorials on this topic.