Try again after updating from the Microsoft Store to the latest beta version which looks to have released this morning. I just tried it and it opened my default e-mail client to send an e-mail to the team. In that e-mail is prepopulated the environment that the beta is running in, so they can better triage this reported issue/but.
Also, as this is a complete rewrite of the app recently. please check the known issuses and planned features in the same feedback area to make sure what you are reporting is not already noted or is being completely redone or a planned feature will update how it works.