Firefox Dandalin Tallafi

I asked such a question the day before yesterday, but none answered me I still use window 7 32 bit and I never want to update The new version ( V 98.01 ) is not compatible with Window 7 A black screen is shown just I open the Firefox browser I thought it is virus, but it is not so. Now I am sure of the problem I uninstalled the new version and changed for an old version ( V 80.01 ) and the black screen is never shown The black screen which I complain about= crashing of the browser because it is not covenant to Window 7

2- I changed the update to  (   Check for updates but let you choose to install them )  and the problem is ended but a message about updating still appears in the right corner  need me close each time. 

How can I get rid finally from update message in the toolbar ? In V 80.01 there is no choice ( never check for update )

Firefox used to have an option to put tabs back under the address bar, it is missing. I don't want to mess with custom css files every update when mozilla breaks things again.

I paid Firefox $28 for unmarked videos. Now the mark, the stamp in the corner of the video, is back. I would like my money back or the non-stamped videos back. Who do I see about that?