Vivaldi Sync Upload Disconnection Issue

Hi,

I am using Vivaldi browser on both Ubuntu 22.10 and Windows 10 Professional (both up-to-date) and have found an issue where the upload portion of the sync keeps disconnecting. Not sure what is going on. I just keep having to sign out and sign back in. I've even tried to reset my sync data but that doesn't seem to have fixed the issue. Shall I raise this with the Vivaldi developers? Any and all advice gratefully accepted.

Thanks,