I use two annoyances filters in uBlock Origin — Adguard Annoyances and uBlock filters - Annoyances.

@ DJ Dirk, I am experiencing exactly the same as you. There must be some way to fix this and like you I've tried every instruction I can find, and nothing works. Google account settings do nothing; Firefox settings do nothing. I have no linked accounts in eBay or anywhere else.

I use both Firefox and Chrome and this is not happening in Chrome - only in Firefox.

@Terry, thank you for what I'm sure will help others, but this Google popup is the ONLY annoyance like this I'm experiencing, and I mean the only one. I've never heard of the annoyance filters you mention. and because I depend on pop-ups on a number of websites I really do not want to try it and possibly mess up settings on business connected sites.