Sometimes the towns might disappear when going to the friends towns area...when you go back to your town and then back to the friends towns area, they would all show then.
Do not add me as a friend in the game anymore as I rarely visit my friends' towns. Not adding anymore too
Replies
https://forums.ea.com/en/the-simpsons-tapped-out/discussion/244617/mia-neighboureeenios#latest