Reeltastic Casino - Confiscation of winnings based on unclear terms and conditions

Just an awful terms and conditions. I deposit 50 euros to my account played some games for a while. In some point I had some winnings in my account and then played Mediaa Megaways game where you had a change to buy guaranteed bonus rounds. So I bought 25 euros bonusrounds. And later 50 euros when I had some more winnings. I won in one round over 3100 euros.
The Reeltastic casino refuses to pay my winnings because they told that they have a limitation I their terms and conditions that single bet cannot be more than 30% of the amount that one have deposited.

First of all this term seems to be very very odd. And second of all when playing Megaways game where you have chance to buy guaranteed bonusrounds the actual bet per round is not the amount what you are paying. In Medusa game the guaranteed bonus rounds what costs 25 euros the bet per round is 0,25 euros and what costs 50 euros the bet per round is 0,50 euros.

So this is why I see that Reeltastic casino declined my whitdrawal request for wrong reasons.