I don't think so, heck I can't even be sure if the sites I played on actually have Date of Birth in their sign up page (and from what I recall, most of them don't). Granted that I've only played on like what, 3, maybe 4 gambling sites so far (and I've already stopped). Glad for OP to get money, but as others have said, 1xbet's reputation is quite dubious so to say.
1xbet is a reputable bookmaker in asia and russian speaking coutries. They have ads in collaberation with barcelona and real madrid football clubs. What else can speak about a reputation?
Uhm
In 2020, the Investigative Committee of Russia put them on the international wanted list in a criminal case on illegal organization and conduct of gambling. All three now live in Cyprus
The 1xBet bookmaker has been operating since 2007, but in addition to betting on sports, it also offers an online casino prohibited in Russia.
Okay? There's more info about how the collaboration was short-lived due to 1xbet being involved in malicious activities if you want to check.
Source:
https://news.ebene-magazine.com/ebenemagazine-ru-the-stars-wear-their-symbols-but-no-one-knows-the-owners-the-main-thing-from-the-forbes-text-about-the-founders-of-the-bookmaker-1xbet-ru/