Welcome to the forums. It's a very common problem with those model of replica watches, and the best course of repair is to replace the tube, and crown with genuine Omega parts as the rep materials are so poor quality they wear out over a short amount of time.
I'm from the UK, and reside in Finland, EU, and can repair your watch, however I'm away on vacation soon, and won't be back until early August, so if you can hold out until then, I would be happy to book you in.