No Save options at end of ride

Hi, recently when finishing a ride I’ve not been offered a save option. Normally when I stop I get a menu button, bottom left, but I have to press ESC, the screen blurs and the face button doesn’t work out just hangs there. I can go back but whatever I do I can’t save.
I look at my activities on Zwift companion app and it’s short about .5km and has an error, and never uploads to Garmin Connect.
Any ideas out there?