On your suggestion and also recent price moves(!) I have decided to see this through further. I managed to get my BTSX into my Bitshares X MAC wallet - great!.
However, it now seems the wallet is not functional, as it is not syncing at all, it gives me error when I try to register, and I can't do transfers. What should I do now?
If I replace the wallet with an update (assuming there is one), is the safe process to export my wallet, delete the wallet app, download and install the update, then import my wallet again? Just want to be sure I don't mess anything up.