Modern Textures HD pack stopped loading for all players on realm. Texture pack itself works fine on regular worlds.

Looked in the 'edit' part for the realm and the box 'Require players to accept resource packs to join was unchecked.

I rechecked the box, loaded the realm, and texture pack still did not apply. 

Went back into the settings and the box was unchecked again. No matter what I do, that box will not stay checked and the texture pack will not reactivate.

I am managing the realm on a PS4.