@ayasalah
Same issue, but mine was Doge. Same withdrawal date of December 30. Tried to email them until now no response. Did you lose your funds, too? I've read that they don't have good support. So, I'm pretty hopeless on how to deal with the issue and we will never know the reason for it or if this is an unknown error on Coinpot site.
I sent them 4 mails so far and nothing, still when I visit my LTC dashboard I see the cancelled withdrawal, I posted the pic and my issue on their moon LTC twitter page (probably that's why I totally erased the address without noticing) hoping that since they open these accounts to post about weekly payments, they will see my issue. They don't even have a direct messaging way on neither facebook nor twitter which is pathetic tbh T_T