As I had many problems of synchronization with my Seafile 6.1.0 on my 6.0.7 server (community edition / ~ 40 users), I tried SeaDrive.
I have access to many libraries (~ 20) on the web interface, all are shared with me using a same group.
Only one library is shared with me.
No logic with the library shown (not the first one in alphabetical order, not the smallest, not the most recently updated…)
I used SeaDrive 0.8.0 on Windows (10) or Linux (Archlinux).
SeaDrive not work with Encrypted libraries. Try to remove your account and add it again to SeaDrive, wait for map file tree and check it. I had similar problem with that, resign help, but I must say SeaDrive is not ready for production, have a lot small problems with that which I cant reproduce for report.
I am not using encrypted libraries at all.
I also tried to recreate the account many times, on different computers and operating systems without result.
Best practice is backup whole library, delete, create new one a push backuped files into it. There’s big upgrade about libraries (seafile < 4+) that’s not compatible with the new one.