منتدى دعم ”Firefox“

Recently I went to open up a tab I had open on my iPhone on my macbook, but couldn't find the "synced tab" menu item under my library. I expected it to look like the example from https://support.mozilla.org/en-US/kb/view-synced-tabs-other-devices, but instead I see what is shown in the attached image. I have already tried steps 1-6 of the "Troubleshoot and diagnose Firefox problems" help page (https://support.mozilla.org/en-US/kb/troubleshoot-and-diagnose-firefox-problems)

Thanks in advance for any help!

Firefox can't keep login even other sites like :Youtube Facebook... Every time I exit Firefox for a while and re-login, the logins to websites log out and have to log back in again and again (I've tried uninstalling Firefox and reinstalling it, and the problem persists). ( I think due to the settings for Firefox )

Please tell me what to do to have the magazine work. It used to, but I think that some new thing like Adblock must have changed it and I cannot read the magazine now. Thanks.