I had the same problem but then I read that it's calculated at an hourly rate and now it's 10 time faster but important thing to know here is that as long your client (miner program) is accepting the new blocks you are getting the reward even if you don't see it right away.I calculated manually   You can see more info (in fact you can see ALL the info) in your stats.

If you're accepting shares you are getting reward.

P.S. Finally found a cheap 2 GH U2 Antminer