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.
If a casino is not scam, user does not loses their money but waiting time for manual withdrawal approval and processing is very uncomfortable and inconvenient experience which is not like by any user on any platform. In order to provide as best service as possible, an automatic withdrawal approval and processing is very necessary and only withdrawal requests that look suspicious will need to be gone through manual review, approval and processing.
Suspicious things like big withdrawal value, withdrawal request shortly after a login, geolocation change and so on. Otherwise, if possible, an automatic withdrawal process needs to be applied.