Pytyvõha aty Firefox rehegua

Where can I get Firefox 52.9.0? There was a list of old versions here but now I can't find it. I found https://download2.portableapps.com/portableapps/FirefoxPortableLegacy52/FirefoxPortableLegacy52_52.9.0_English.paf.exe I really did not want the portable version but avast considers it a threat so it may not be genuine.

I had a service provider in Montreal Quebec citenet.net , My firefoxe account was with them , I would like to move my account using my google email on an other internet service provider in ste-Marguerite du Lac Masson Quebec how can I do that ?

First, check "DeIete cookies and sitedata when Firefox is closed" from Privacy & Security in the settings.

After that, register the Google domain as an exception with "Manage Exceptions".

When I restart Firefox after logging in to Google once, the Google registration information disappears even though I registered the exception, and I have to log in again.

However, there are some sites where my login information will not disappear if I register as an exception.

How can I prevent my Google login information from disappearing even if I restart with the above settings?

Thank you.

An automatic update of Firefox which resulted in a "quit/create new profile" choice has removed all my bookmarks

Of the four profiles stored in "about:profile" three are identical (ie. have only the default bookmarks stored) and one, generates a "quit/create new profile" message.

The "bookmarksbackup" folder (in /home/user/.Mozilla/Firefox/zs1jki8t.default) is empty.

The "import/backup" option (in Manage Bookmarks) offers nothing to choose. There is no 'list of dated automatic backups.'

Firefox did not create an "Old Firefox Data" folder on the desktop.

Browser privacy "strict". "Never remember history" was selected.

Running Firefox in Manjaro (Linux)

Help.