The function cannot be used. How long can I help solve the problem?

I bought it, Facebook, Twitter, Tumblr, Pinterest, Google My Business cannot be used, there is no way to choose users below. Other shows were successful, but I did n’t know what was going on. After connecting the technology, it is uncertain. I applied for technical support, but I still failed to solve any problem, but now there is no reply.
If the problem cannot be solved, please reply, we want to refund.
Now I give the entire website’s username (administrator) and passwords to technical support, but what should I do if I can’t get it?