If your account got restricted and you are not able to withdraw, this may mean multiple things:
Your last deposit was a long time ago and you were only withdrawing all this time.
You have never made a deposit and have been farming and withdrawing free coins.
You made the smallest possible deposits to easily avoid the wager required and be able to withdraw the free coins.
You tried to abuse any of the games provided, sportsbook or system that Howl offers.
For this restriction to be removed and avoid getting restricted again, you must show constant activity, be a normal player with deposits, and not just farm the free coins.