Hi there, @Bogenjogen. Welcome to the Fitbit Community Forums. Thanks for bringing this to my attention. I'm sorry to hear that your Versa 2 stopped syncing. I understand your concern, I will do my best to help you with this!
As a first approach, I'd recommend checking if your mobile device meets the requirements to properly operate with your Fitbit device. For more information, see Fitbit Compatible Devices.
In addition, please follow the troubleshooting steps provided here Why won't my Fitbit device sync?
On a side note, I've seen you contacted our Support Team after posting here and they've already assisted you. If the steps that our team has provided did not work, please feel free to contact them back for further assistance. Since you already have a ticket open with them it'd be easier to continue the follow up on this matter with them directly.
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