every time i open a new tab and search for something, i have to sign in. i tried everything. every tried deleting it and reinstalling it but it didn't work at all.
Did you close the browser between searches?
Your ‘logged-in’ status is stored in special cookies. If the cookie is removed, you are logged out.
You may be in Private Browsing mode or told Firefox not to remember.
Type about:preferences#privacy<enter> in the address bar.
The button next to History, select Use Custom Settings.
Turn off Always Use Private Browsing Mode
Turn on Remember My Browsing And Download History
At the bottom of the page, turn on Clear History When Firefox Closes.
At the far right, press the Settings button. Turn on ONLY
Cache and Form And Search History leaving the others off. and whatever else you want.