We do not have any experience with C4Changer, however, it was a verified exchanger on BestChange. Visit BestChange to confirm if it's recommended still.
Right now our best crypto exchange for Oman is:
Uphold. If you are seeking for an alternative to C4Changer you should start there. To see all of the best crypto exchanges available for you, see our list:
Oman Crypto Exchange. If you'd like to visit C4Changer anyway, their website is
www.c4changer.com.