Twistedtree51 , interesting, you stumbled on an issue when handling a provided area of interest. I’ve opened PR with a fix here (Deal with failure to reproject area of interest bounding box by nirvn · Pull Request #59 · opengisch/libqfieldsync · GitHub), it should reach a public version of QFieldSync soon enough.
For the time being, what I would advise you is to uncheck the only copy features in area of interest checkbox (seen below):
That should hopefully be the last hurtle to a successful packaging for USB cable. I’ll comment on the QFieldCloud reply in a separate comment.
Imported from GitHub comment by @nirvn on 2023-12-27T15:09:06Z