Minecraft ps4 edition: the "Minecraft full Entitlement" Add-On is locked.

Hello, I am having some problems on connecting to my friends's worlds (Cross platform included) since I have updated Minecraft to the first Bedrock Edition. I looked for the problem myself and I've found my "Minecraft full Entitlement" Add-On locked. Is it the reason i can't play with my friends? Luckily this bug doesn't work for all my friends: I can still connect to some worlds.