I just updated the RX and had no NTRIP issues.
The red dot just means the app wants to touch bases with the server to confirm/ or establish account association. When going to the profile tab and tapping on the confirm button, I have had it start a loop that makes no sense. What has worked for me is to select Log Out, and then Logging back in seems to get the air out of the system and it is satisfied.
Flow works just fine without a data connection. Of course, your data will not sync to your account until you re establish the connection. Projects, and NTRIP profiles are stored locally as well as on your account.