I need to have a way to manually turn off/on a feature of creating new accounts while still letting users to log in if they already have one. The problem is that I cannot use a flag in the title data for this sake as users are able to request it only after being logged in. I also cannot rely on updating the game version each time as it sometimes take a few days for a build to be processed by the googleplay/appstore. I was considering using server API to edit permission policies and manually allow/deny an access to /Client/RegisterPlayFabUser but it seems that it would still let users to create guest/google/game center accounts because of a CreateAccount flag I have no choice but to include in requests as otherwise it would be impossible to register those kinds of accounts in general. I would also prefer to not host a third party service to store a one bit of information to retrieve by a client before attempting to register (if I have a choice). I also didn't find any way to restrict an amount of allowed user accounts in the title's settings. Maybe there is some way to get a data from the Playfab without logging in while having only Client API included to the game? Please tell me if I missed anything.
Thank you for your work.