Iaps is disabled and i can't activate them again!

Both deemo and x plane is broken now because for some reason the iap settings has been disabled and doesn't allow me to buy anything. Even x-planes crashes because the iap thing is disabled...

How do i enable them? I even tried to enable the google serivces and google play, but still doesn't work, and there's a "forbidden" sign next to the wifi aswell for the notification, and no setting to enable it either.:(

And there is no setting in google play to enable iaps either.

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