Error testing iOS app

Getting the following error message when trying to test my app on iOS. I can get to the login or sign up page but when there I get this message.

If you have a way to reproduce please file a bug report. As it’s in early beta we can’t commit to fixing everything, but we’ll try.

Thanks just sent - fingers crossed a lot of work went into this and customers waiting.

Hi there,

Getting the same error. Has there been any updates on this?

Regards,
Pieter