Brave popup - how to delete?

[rikona]

Running Brave browser in Kubuntu. Runs OK but update installed a popup
window that in on top in every desktop. Closing it gives another one
in a few minutes - essentially always there covering something
desirable in EVERY desktop/every app. One net solution was to run snap
update but doesn't work in all cases, and not in mine. This is a PITA
and so bad I may stop using Brave. But, is there SOME way to get rid of
this popup, or at least have it STAY closed?

And if it does stay closed or not come up constantly on your box, can I
find out why that is?

Thanks,
Rik