Hi! I also posted this on the Steam bug report thread but since there hasn't been any replies there in a while, I am posting it here too.
Something is wrong with the Friends Forever DLC's page or listing on Steam. It isn't listed on the Sprout Valley page's DLC section at all: only the Easter one is. I had to click the DLC (1) to even see the Friends Forever DLC exists.
Also, your discord link is broken on Steam as well.