Can't ride in events - Android Wattbike

Does anyone else have trouble joining timed rides? I’m a new user and tried to join 2 timed rides but although it all seems ready to go at the start, I can’t get my avatar to move - timer starts but no power, distance or cadence. Switched to wife’s iPad and worked perfectly. Wattbike Atom with Zwift running on Huawei media pad on Android 7. Works fine just riding routes.