CalDAV account locally and on GA pLus

Hello,
Installing GA on a mini-PC without any issues.
Configured an internal CalDAV calendar successfully (Account: OK, Synchronization and Sharing: calendar visible)
Synchronization: completed successfully

But
On GA Plus it is impossible to start the synchronization and therefore impossible to access the calendar

Is this normal? Did I miss something?
Thanks for your help

Hi @BobLeNain

Are you still having the described problem?