That is why I don't trust and use any pool, which is not well-known. I suggest you to try contacting them via their support using this email
poolmaster@hash-to-coins.com and let them know about your issue. I hope they can fix your issues as soon as possible.
Also, like the above said in the meantime use other pools for an alternative like
https://www.suprnova.cc/ it has many supported coins available, just make sure to us a well-known pools just for the safety of your coins.
And for the last suggestion move this thread to altcoin section to get more suggestions and advise.
True, I don't really tend to use those non popular pools because issues or possible problems might arise and wont really be easily solved out compared to those pools which being used commonly.
For now theres nothing he can do but to sent out message to their support and wait for their response.If he wont like to experience hassle in the future then better look for better one.