Friends on mobile are not able to join me in my worlds.

So, yesterday I was on my Minecraft world and my friends were going to join me. My friends both play Minecraft on Apple devices. When they tried to join me, the screen “Could not connect outdated client” popped up on their screens. We tried another world of mine, and the same thing happened. I was able to play in their worlds, and servers. My world has two behavior packs, Furniture Life Add-On, and Roads + Add-On. I’m not sure if the Add-Ons need to be updated or what, but I just want to play with my friends. Hopefully this gets figured out! 🤞