Post installation

I want to store user-uploaded files on a CDN (probably bunny.net). I don't want to store them on my domain (mydomain.com). Is there a method or a module that facilitates this?

I am assuming that if this is possible, I'd put a CDN URL in the File (Field) Path setting:

Image: https://ibb.co/05n20k1

I am aware of the CDN module (https://www.drupal.org/project/cdn), but this appears not to interact with uploaded files, just the serving of files.

Recent posts here have helped me install Drupal core with Composer. The result is a site which runs from a web sub-directory e.g. example.com/web.  Under a manual install I can place the Drupal files in the domain root and run Drupal with the url example.com. I understand that the Composer method protects the vendor directory by placing it outside the folder to run Drupal and also further protection comes from the inability to download or upload files to /web. 

About paths (Pathauto) and arabic letters

I have a new installation of Drupal 11 and have been trying to add a new theme. I have installed a theme using composer, and have used Drush to enable the theme and make it the default. The problem is that the theme does not show up in appearances and there is no way of editing the theme's appearance.

Has anyone a solution?

I'm preparing two sites to migrate from Drupal 10.x to 11.  Both sites are on the same GoDaddy.com Virtual Private Server that I administer.

As part of the migration, I installed the upgrade_status module for both sites.

For MySite1.com, the module installed fine and is working like a charm.

For MySite2.com, however, when I pull up Administration>Reports>Upgrade status, it shows the information about compatibility for the upgrade, but also the error message:

What is your preferred way to add a sticky "call now" button?

One that is sticky to the bottom of the viewport and floats with the up-down scrolling of the user.