Thank you for all the responses. I tried the customers service on the site, but didn't get any respons.
I started using this site back in 2013, back than it didn't have any problems. But I didn't spend a lot of money on it.

I was planning to send my bitcoins to a more reliable wallet. But the minimun amount for sending was higher than my credit. So to up my credit, i send the 50$.

Hopefully I somehow get my bitcoins, but I don't have a lot of hope.