I ride daily, any idea why I can’t join brompton from phone or computer??
A single honest effort 10min ride should enable you to then join races that use Racing Score.
Check out all your ZCA activity reports. I don’t know why or how it affects the activity Zwift thinks you have done but it looks like each of your recent activity is crashing when saving. Your most recent activities have been ending just after 30 minutes or just after 20 minutes.
edit: same save crash time 30:09 as three of your recent activity times.