The Hub not in sync with Defender

Hi! Since the last WordPress update I'm having a sync problem in the hub with some (not all) of my connected websites. Three of them are showing the security issue "Please update to the latest version of WordPress". But all these sites are already updated. After more than three days the problem still exists. The sites are updated, but the Hub is still showing the security issues. What can I do to get all sites back in sync? Thank you for your help in advance! Best regards.