Can't join realm server with mods on it

When I try to join a Minecraft Realm server that is shared with my iPhone, it works fine on my iPhone but not on my iPad. On my iPhone , it starts loading the Realm like normal, but when it’s nearly finished loading, Minecraft suddenly crashes and sends me straight back to my iPad’s Home Screen. The Realm has 6 mods/add-ons installed. I’ve tried removing some of them to see if that would fix it, but it didn’t make any difference. I can join the Realm perfectly fine on my iPhone, so I’m not sure why it won’t work on my iPad. I’d really like this fixed because I want to be able to play on the Realm server on my iPad as well.