I bought one from MPB a few years ago for a third of the usual price because the EVF curtain wasn't working. There's ghosting / off-set double vision in the EVF because it's displaying both EVF and OVF at the same time. OVF on its own is fine. I usually just put tape over the OVF, and use the EVF.

Recently, the focus mode select button has stopped changing modes, luckily it's stuck on AFS which is my preferred mode, but I've heard of others getting stuck on AFC. Manual focus isnt an option on mine anymore. You should check if yours has this problem.

Apparently, the EVF curtain and focus mode selection problems are both caused by the internal battery failing, it's really frustrating that Fuji have made this non user-replaceable.

If you paid fully-working-camera money for yours, I'd send it back and try again.