New Outlook keeps kicking out icloud and gmail accounts

I like many features of the New Outlook, but I switched back to Classic Outlook because it keeps signing me out of my iCloud and Gmail accounts, and when I try to sign back in, I get an error page. I tried Copilot to help, but after several runarounds, I gave up. I'd like to know when Microsoft will fix this issue, because I really like New Outlook except for this.

Thanks