I just updated to version 98.0.2 and I can no longer access PNC Online Banking site. I've been accessing the site via Fire Fox for years. I'm running Win 10 Build 19044.1620 ver 21H2, Fire Fox desktop.
I have the same problem. I can use the Avast browser and log in to PNC, but when I use Firefox, I get a page that says 'verifying' and then flips back to the log in page. It would seem that Mozilla would correct this issue since it's universal to all PNC users.