I don't see the template settings sidebar.

It's not working. Thank you

What is not working?

Can you answer David's question in the previous reply?

When on the customizer, can your Right Click > Inspect the page to open the Browser Developers tools, check the Console tab, are there any errors ?

Sorry, I didn't understand the question.

DevTools failed to load source map: Could not load content for chrome-extension://gighmmpiobklfepjocnamgkkbiglidom/browser-polyfill.js.map: System error: net::ERR_FILE_NOT_FOUND
load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,regenerator-runtime,wp-polyfill,wp-hooks,underscore,wp-dom-ready&ver=6.1.1:5 JQMIGRATE: Migrate is installed, version 3.3.2

Hmm I don't believe that's the issue.

Can you try another browser to test?

If that still doesn't work, please provide the dashboard access to us.

Opera browser
DevTools failed to load source map: Could not load content for chrome-extension://oidhhegpmlfpoeialbgcdocjalghfpkp/browser-polyfill.js.map: System error: net::ERR_FILE_NOT_FOUND
load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,regenerator-runtime,wp-polyfill,wp-hooks,underscore,wp-dom-ready&ver=6.1.1:5 JQMIGRATE: Migrate is installed, version 3.3.2

Dashboard access send.
Thank you. I really don't know what to do about it

Can you please disable all plugins except GP Premium for me?

This isn't something we can do for you.

Thanks.

Sure. Done
Thank you

Hmm I just activated Twenty Twenty and Twenty Twenty-One WP default themes to test and the same issue occurs with them as well:
https://www.screencast.com/t/Z1tizIWpNjo

Can you confirm?

If that's the case for you as well, then I'd recommend checking with your hosting support and showing them the issue in a default theme environment.

We haven't had other reports on this issue so I'm pretty confident that it's not a theme related issue.

Let me know :)

Thank you very much, I tried the template Twenty Twelve and it's fine, so I didn't think it could be the hosting. Thanks again, I'll let you know if I find anything out.

Sounds good :)