Addons not working on realms

Some friends and I bought a realm, decided we wanted to put addons. We put the realm in experimental gameplay and put these addons :

Pink dolphin

More drops

Chisel for bedrock

Sweet foods

We also have a ressource pack installed called John Smith Legacy

They work just fine when in a non realm world but as soon as i replace the realm world with the addons one they stop working. Ive been looking everywhere but cant find an answer. Thank you