Pencu Ndimabu Firefox

I have an iMac with Sonoma 14.3.1 with Firefox 115.9.1 esr . It is for personal use, not for a business. I just learned that there is another Firefox version (124.0.2) which is not esr....

Which version should I use and why?

If I should use the "normal" version, how do I replace the esr version with the "normal" one ?

Thanks.

When attempting to install an extension and clicking on "Add to Firefox" the button is replaced with a "Cylon" throbber and the popup dialog asking to confirm the install never highlights the "Add" button. The browser will stay in this state indefinitely until the tab for the extension install is closed.

Could this be a permissions problem involving the ".mozilla" directory tree in the home directory? I've been having this problem regardless of the FF version for some time (going back to at least v110.x). The recent issue involves that 115.9 ESR version installed in Debian Bookworm.

TIA...

v155.9.1esr Debian 12

I'm testing different Debian 12 on multiple VMs, it came to my surprise to see that my VPN hash I used on a website the day before was saved by Firefox on the new VM.

The Sync was on but then which one saved my form (hash)?

1. Numbered list item Logins & Passwords ? note: The hash was not a login but a form. If Firefox saves all the form, you should explicitly rename Logins by any forms/inputs.
2. Numbered list item History? note: I hope this is only URLs.

If Firefox is savings "forms" (input fields) not just "logins" then it should be explicitly written. Is it an expected behavior?

Revision: 115.9.1esr (64-Bit) for openSUSE Leap (15.5)

Some months ago, I unfortunately typed a password in the username field of a local page (access to my Internet box, oh Noes).

Since then, it appears each time I remove the access data in the Firefox settings. When entering data again for a login without password enquiry, the password becomes invisible again, and vice-versa.

It is impossible to show the phenomenon using a screenshot, as the password immediately disappears.

I want to visit http://bispebjerghospital.dk/ . I have seen on https://www.whatsmydns.net/#A/www.bispebjerghospital.dk that it's DNS isn't propagating correctly, so I turned on "MAX PROTECTION" for DNS, hoping that it would let me see the site.

But Firefox showed me "Unexpected error" the first time I went to the site. And then I clicked 'always allow' and now it just spins and spins with no response visible.

How can I visit the website from one of the countries with red X's on whatsmydns?