I wouldn't continue playing with even a single euro of those $30k while you have pending withdrawals.
I've seen cases of people successfully withdrawing from Spinboss, even using crypto, but also quite a few complaints about delays, withdrawal limits, and generic support responses. With an amount like that, I'd start withdrawing the maximum allowed right away and wouldn't cancel any withdrawals to get back to playing.
I would also complete the full KYC process as soon as possible and save screenshots of balances, withdrawals, chats, and emails. If they start rejecting payments or asking for different things each time, you'll have everything documented for a complaint.
For sports betting, I try to avoid having too much of a balance in a single bookmaker. Lately, I've been using exchanges like Odd Justa (https://www.oddjusta.com/) and Oddrs (https://www.oddrs.com/), where I prefer to manage my betting volume without relying so heavily on a traditional casino/bookmaker.
With $30k, my priority right now would be to withdraw the money, not to continue playing.
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