The Manual withdrawal model is used by few casinos and it entails approving pending withdrawals manually. This help the team to check each pending withdrawals carefully before approving although it can take a lot of time before withdrawals are processed. Emergency withdrawals do not work with these kind of casinos and all you have to do is to be patient with the team until they approve your pending withdrawals.
This is what I think is being used whenever I withdraw. It takes time, but I am not in a hurry, and that's okay. This ensures that Spinly is able to approve the withdrawal requests that are fine and clean. Having that said, being able to wait could be tiring for those who are not used to it but with the withdrawal fee that's low and just a few cents, that's a big savings not just for me but also for Spinly.