Firefox keeps deleting cookies
Since the last update on 17.02 Firefox keeps deleting my cookies which removes the active logins. Strangely enough the history is remaining. 3-4 days ago I logged again in every platform I use and today all cookies were gone. I have already checked my settings but all seems fine.
The used plan is Standard, for History I switched from Remember history to Custom, marking both Remember browsing and download history and Remember search and form history with Clear history when Firefox closes unchecked but to no avail.
There are no crashes and no other anomalies, the only extension I am using is Adblock plus. I reset the browser, installed the Adblock and check the settings again. I also logged in Google on my Edge as well and it keeps its login.
Can you please help?