I'm trying to change the email address for my account, but it tells me that my email is invalid. I tried clearing my cache and everything, but nothing. I'm on ChromeOS 105.0.5195.134 with, of course Chrome 105.0.5195.134. If it helps, it's an @outlook.com address.

Please send me a PM with the email address you want to use and I will investigate why it's not permitted.

Seems like this was user error in some fashion, because I didn't see anything that seemed wrong and it went away without changing anything.