Maybe for the Singapore thing. For the play integrity thing, it applies to apps from anywhere except the play store directly. I use Aurora to install apps that say "not compatible with your device" for no reason. But a week or two ago ago, they started blocking access and saying I needed to install from the play store.

Fortunately I was able to downgrade and they kept working, but I don't know how long that will last. At some point the server side will change the API.