Hi ! :)
If you mean you want the player to enter a mode where he plays endless random levels made from the community, then for sure !
You just need a lil adjustments to the events, like a button to enter the endless mode, and a global variable set to random in range between 1 and the number of community levels in the database, and after every level the player finish, you can simply show a button to play another random level, if the player pressed on it, you trigger that variable again, and restart the scene to make it play another community level.
I already built the community events (but by clicking on the community level button to start it), so like I mentioned, you just need a few adjustments to trigger them, in the way you want :3
Removing the community levels is easy since they are just visual objects.
GDevelop store and itch version are exactly the same, even when I push updates to the template, both stores get the update, the only difference is the price, on gd store it's higher since the store takes % of the sales.