Minecraft ps4 editons button is not there, it says i have it in the updates part but i don't, i want to play on my old worlds :(

I dont have the editons button even tho i had the games before, well kinda. I still have my old worlds and stuff but i had to rebuy Minecraft after accidentally deleting it and when i had enough money to rebuy it the update came out. Some of my friends can't use the new minecraft and cant use multiplayer because its says the world is not joinable. So i really want to play with them but i don't have the editions button so we cant play on a world we spent years on together