This is the second year in a row that I'm receiving money in my 1xBet balance as a birthday present.
I have bet on several gambling sites, not as lucky as you, birthday bonuses.
I am also curious about the 1xBet gambling site, what birthday do you mean, your birthday or their birthday (1xBet).....?
If I win a bonus from a contest win or the like held by a particular gambling site, I may have received it, but not with birthdays, if so, you may be one of the lucky ones.