First of all, there's nothing anyone can do about your issue because this bookmaker has been accused on several occasions which you ought to do your finding on them before using their service.
Second, you also do the wrong thing from your end by using a VPN to access a gambling site which is against the rules and regulations of every gambling site.
In the meantime, I hope they will provide you your fund so they could at least convince us that they have changed.
I have posted this a few places, and everytime one person has pointed out, wrongly, that VPN is banned. The rules are "Nitrogen reserves the right to deny its service to players from countries or regions where sports betting or cryptocurrency activities are deemed illegal. Therefore, the use of obfuscation methods such as IP masking or proxies is not permitted." But neither are illegal here, so the therefore doesn't make sense. Also, suggesting fire insurance after a house fire is not helpful.
The Pharmacist, England is restricted according to the support chat, but you need to log in to speak and there is no official Iist on terms and conditions. Like the above, they're generally unclear about a lot of things until it's too late. They are refusing the proof of IP because it has to be shown by logging in unmasked. But because the UK is restricted, I can't access the site so it's catch 22.
I am skeptical of getting the winnings but thought no harm to see if I could get help.