check this thread which includes a link and reported issues
If you have set it to backup selected folders then all files get backed up regardless of size. However if you are trying to push files selectively to the cloud then there is a 2Gb file size limit.
It is set to backup a single folder and child folders only. It worked ok with 21.4.10. Reinstalling 21.4.10 does not work because it automatically updates itself to 21.8.9.
mumfie, thanks for the info, update done and seems ok.