You seem to be using some casino review site of LTC Casino as proof that they allow the use of multiple accounts and VPNs. I don't think that will work and that's not proof. I took a quick glance at
LTC Casino's TOS and couldn't find any mention that players are allowed to create multiple accounts or use VPN. Can you show me where it says that in the official TOS?
It's hard to follow everything you wrote in OP but you seem to hint at there being a problem that you are from the UK. According to their TOS, that shouldn't be the case as they don't have any territorial restrictions for players unless they reside in regions where crypto is banned.
The website accepts players from all countries and geographic regions where cryptocurrencies are not banned. It is the player’s sole responsibility to inquire about the existing gambling laws and regulations of the given jurisdiction before placing bets on the website.
https://www.ltccasino.com/terms-and-conditionsHave you notified the
LTC casino account on Bitcointalk and made them aware of this thread? If not, I think you should do that.
It's hard to comment on whether or not you were scammed because you haven't posted any proof from your account, proof of the winnings (except that screenshot that probably won't qualify as proof), and there are no logs of your conversation with the casino support staff. If your account has been frozen, you need to ask to regain access to it so you can provide some proof.