Corrado Franco

Thanks. With this everything is ok

For example in https://shop.universalmusic.it, when I go to pay it goes on a loop. If I disable the extension instead, it works. I don't see any particular errors for paypal,...

Yes, it is a conflict. With only that active it works. Forgive me for not doing this test sooner. Now I'm trying to figure out which extension it conflicts with.

As an ad blocker I use ublock origin, but I tried to disable it for testing. What misled me is that by removing this extension everything works normally. I will...

No. I've tried twice, but I can't find it. There is something strange about it. By the way I deactivate one by one and it's okay. I leave all active...

I don't use VPN and have basic settings. Before the last update, I had no problems.  

With 3 different devices. As said doing that test works regularly, but then on ff restart no. I should do a test and reboot each time. It takes too much...

Oh yes, pardon. It creates problems together with the ALLOW RIGHT-CLICK (https://addons.mozilla.org/it/firefox/addon/re-enable-right-click/) extension. If you want to try the problem also occurs on ebay and bandcamp.

The situation is more complex, I try to explain. Today on bandcamp it recurred, and by removing any random extension instead it works. So I did some testing, and it...

It is probably some conflict with something I use, which I cannot find, however. This one you suggested works fine. Just as yours worked fine until a few months ago....