Re: Following others on the Sims 4 gallery
That has to do with the Origin privacy settings. They changed something so you can't follow people that have set their profiles to private: http://forums.thesims.com/en_US/discussion/813612/follow-function-in-gallery-changes-in-the-february-patch
There might be a problem with it though but if it's only one of the people you follow, that's probably it.
