I-Firefox Isithangami Sokwesekwa

FF 100 on Linux Mint 20 cannot access any websites. Tor can. TBird email can. I'm on an older Ubuntu with FF 94 writing this. How do I get back to previous FF? URGENT!!!

I am looking for suggestions/work flows for migrating existing Mac's from the standard firefox release to the ESR version. I am looking to manage these all under 1 update cycle. A couple of current problems:

1. On a system with the standard version already installed, I can't find a way to upgrade to the ESR version without uninstalling first.
2. Once I would do an uninstall and then an install of the new version, I am prompted that I have launched an older version of Firefox and that I must create a new profile. How can I do this without loosing all users bookmarks, extensions, etc?

Thanks!

Why can't I online shop with Mozilla? For months now I have had to go to another browser to use websites and make purchases. It doesn't happen 100% of the time, but enough to have me consider using a different browser permanently. I have used Firefox for years and don't want to change. But, when I need to purchase things or even pay bills and it won't let me continue on to a site, it's an issue. And yes, I have cleared cache and cookies and it doesn't seem to make a difference.

Specific examples: I logged into a store that I have purchased from before to make a new purchase. I can browse the website, but when I add to cart and try to check out, nothing. No message, not anything to help me know what the issue is. I go to Edge, pull up the site, and complete my transaction.

Today I tried to log onto a site that we just set up an account with yesterday. It's to be a guarantor on an apt for my son. We set up the acct and went today to finish the requirements and it won't let me access it. Just keeps scrolling. I go to Edge, log in with no trouble.