Error / Bug - Rift Home - Every 5 sec --> standby mode on

Hi,

i have an Oculus Quest, link set up (worked fine) and a powerful computer to do it. Since today there is a bug for me which makes it impossible to use Oculus Link. As soon as I am in the Oculus (Rift Home) Link menu, the glasses switch to standby every 5 seconds. If I then disconnect the cable, the problem no longer exists in the normal Quest Home. I have tried everything, reinstall, updates, etc. Nothing works. Can you help me? In times of Half-Life Alyx this is really stupid. Best regards