Contax TVS II

Hi!
I just got a Contax TVS II from Ebay and it seems it’s not working properly. It’s stuck in flash sync and at 1/60 shutter speed. Contacted the seller and he insists that it was working... so not sure if I am doing anything wrong. I found someone with the same problem on the Contax RTS but it seems on that camera it just does that on the first two shots of a film.

Does anyone have an idea of what it could be?

Thanks a ton!!

You've held the flash button down for several seconds until the flash options have started to blink on and off? Then cycled the icons to the mode you need?