Companion App will not open after Update

I have update Companion App to version 3.3.0 and Zwift to version 1.19.0.
Now Companion App intermittently will not open ,just sits at the initial screen.
Running on iPad with IOS 15.1 and iPhone IOS 14.8.1. Both have same problem.
Maybe only happening when zwift is busy?

Check to other thread on this issue.