I've just tried to log into my F/B site and have been asked to either pay €9.99 per month or allow ads and pay nothing .  I wonder if anyone else has come across this?

Yes, this has been going on for a while.  I refuse to pay so I get the adverts, which are damned annoying.

Try installing Facebook Purity https://www.fbpurity.com/

I backed out when it mentioned €280 something €'s.....

Its free

OK, Ill try again...

As anticipated, it's not working for me.  I've tried 3 times now.  I will take laptop to Reparamos on monday before fatclub