Minecraft PS4 can't be upgraded to the full version?

I have the following problem! I wanted to play relaxed with a colleague on the PS4 Minecraft. Before that we gambled on the PC. I'm aware that the versions are not compatible! Now I can't buy the game, because whenever I start and want to play the game, the main menu says that I should buy the full version. Of course I googled like a stupid one, but found nothing. When I press the "Buy full version" button, I come to the store, which says, "Purchase not possible - because Minecraft has already been bought". Logically, I didn't buy the game. I just played the demo.

The Sony Help Center is actually quite good in such cases:

https://www.playstation.com/...t-help/#!/

or Tel: 06102 771 3001

Yes, can say for everyone who also has the problem. It is because you played the DEMO version, which now blocks the "purchase license" because the game thinks you have already acquired a license. Since the Sony support you have to free the license again and then you can buy the game as normal.