No Mobs Spawning In Realms World and Options Wont Save

I bought my realms last week hoping to have a working world with my friends that is up 24 hours without having to bother with server hosting websites.
But.. I created a world and invited my friends to it but forgot to change the setting before so I immediately went and changed them then selected [Done] then went back into my world (nothing changed) so I went back into the settings again and repeated what I have done previously although noticing nothing has saved but I tried again same thing happened I went back in and looked at the settings. they haven't saved yet again, nothing seems to work and I don't think its just me Ive read posts on different websites with people having the EXACT same issue as I so I assume its a bug Hopefully its fixed soon so other players and I can enjoy realms once again ^_