Would you still advise a complete uninstall and reinstall if everything else upgraded perfectly. The only thing left is the Network Sync and that one remote user. Once I opened the database on the server it upgraded the database without any issues so I'm really hesitating to remove everything and starting from scratch but if you think its the only way to get the Sync upgraded I'll go ahead.
Regarding point 2 I cant give you the exact message until Monday.
Best,
Wayne