Casino delaying verification after big win

I was playing in 5GRingos casino and one day I won a large sum of 2.5k euro so far so good. I made a withdrawal on the first day of 500euro via FunID cause the maximum withdraw per day was 500 euro and a 2nd withdrawal on the 2nd day, when I logged on the 3rd day to make another withdrawal my account was locked and I had to do a verification and here is where the struggle started I uploaded every document they asked but they where not accepting them and kept delaying! When they finally accepted them they asked me for bank transactions for specific months, I sent them but they kept rejecting them. I even contacted the bank personally to make sure it’s the correct file I needed and they said yes. So I kept resending them till they finally accepted it on the 4th working day. I log in to my account to see if it’s finally unblocked but it still hasn’t been. I looked into verification and there is nothing else I can upload all the documents are verified but my account is still under verification. I tried to contact chat but they kept copy pasting the same mechanical answer like we are looking at it and etc. After 2 days I received an email saying that I needed to verify my IP with logging into my account and contacting the chat without using a vpn (I’ve never used a vpn) . So I log into my account went to live support and asked them to verify my account, the agent after trying to delay me for what has been like 45 mins with messages like I am looking into it, I need a bit more time and yet again 4-5 times that he needed more time to look into my problem she suddenly told me that he had to go and he transferred me to a different agent and I had to go over again from the start the conversation! So I went into it again and after again a long delay the agent told that the appropriate team said that I should close my vpn and to go again at the start! I didn’t have any vpn on! I cleared my browser case restarted router and went back and forth to 3 different devices and 4-5 different agents they kept telling me close the vpn and come back again. I am afraid they are trying to find excuses to close my account without any reason.