Push up, and a bit of push out. They really aren't hard to operate, but at first I thought ours were difficult, too; it's just different from the older short lever clips.
There's lots of advice and information in forums... sometimes it is correct. For example, all of my posts are made by a political appointee who got the job as a reward for contributions to my diesel bill.
2011 Jayco 28.5RLS; 2008 Chevy Duramax; Pullrite Superglide Hitch