Unable to purchase full game

I own the free trial of Minecraft ps4 edition and i got it before the bedrock update and whenever I tap on unlock full game the ps4 store opens with an error message that says 'this content cannot be selected at this time.' so i have no other option but to exit back to the game.

Am I also required to repurchase the game because I have already purchased the full version of Minecraft bedrock on the Xbox and there is an option for me to sign in to a Microsoft account, so am I able to use my Microsoft account that has already bought the game?