Nah they legit. Basically it happens automatically.
The only time I had a problem was when a foreign fighter won and I was waiting for two hours for my ticket to clear, then I had on the chat and had them folks cash my ticket.
Another time when I had a problem was in 2020 when Prograis beat Redkach. At the time they scored the fight a NC but later on gave Prograis the TKO. I sent a link with proof to customer services that my ticket actually won because of the TKO decision and they said the fact that it didn't happen that night in the fight means that I was stuck with the N.C. loss
If you want to cash out, you can do it by Crypto, Check etc. I usually do crypto since its the fastest.