You'll be giving them rights to access those documents, not just the deposits that you're going to do for them. It's all about knowing the details and every single thing about it.
Because that's where it is all starts when a gambler suddenly is asked for it and doesn't know how to handle the situation. It's either going to make him obey or just stay misunderstood and starts to accuse the casino because he doesn't want to obey.
This is the reason why it ideal to read the documents, terms and agreements such as the faqs of a gambling platform these is a common mistake of the people nowadays and now making some trouble with the platform with their issue and urging to get the funds, also its responsible of the player too to read those because they want to use the platform its their responsibility too and as protection. But still the platform must always take a note to the users they have this so they keep an awareness.
But still, the reality is that only a few are reading it for their own sake. Those are likely the gamblers that have fallen into the same experience as the others that needs to read those.
And they've been doing that to avoid the same experience and problem whenever they're about to withdraw or anything of the same problem as before.