There seems be a trend nowadays to offer signup bonuses to newly registered users as I saw the same thing with another casino. Too bad that old players are excluded; hopefully they launch a new bonus soon (like deposit bonus) for everyone.
I doubt if they want to launch a deposit bonus for everyone because there's already tons of players on Roobet, if they launch a deposit bonus without strict rules, they might rekt lol. Although we're know Roobet is very generous since they always spend $2,000 every week to give $500 for streamers and $1,500 to lucky users.
Maybe Roobet want to get more gamblers and hitting 3 Billion bets wagered ASAP.