More than three users have confirmed that they are experiencing the seam issue meanwhile none of them are located in UK, meaning either the site is having issues filtering ip address or it’s just a shitty website.
And if you take a look at the post history of the op, I think that there’s a hidden motive behind him posting this casino’s link here in the forum. Because if you check all his posts were made in the lending board with him seeking for loans which is a sign of a scammer and all of a sudden he comes to the gambling board testifying that he was able to withdraw from a site that has a low rating, that’s a big fat red flag if you ask me.
Looks like OP has been trying his luck on the lending board. I would say he might have come up with this casino and is trying to scam gamblers. I mean why on earth a casino would give bonus without a wagering requirements? He does claim he got it without a wagering requirement which should raise concern. Then the shitty filtering process is something I won't be able to comprehend as I am not it is so easy to do that using Cloudflare.