I have the same problem but wit minertopia pool, you can see the post:
https://bitcointalk.org/index.php?topic=1896605.msg23970707#msg23970707Is like the coins are sending to other wallet and never get my wallet.
Right now, pool.minertopia.org is down.
Now, I am mining in zpool but yet they don't send my anything, I have to wait 2 hours. I 'll advice you if I receive the coins in my wallet.
Just so that we are all on the same page, I am running version 2.1.2.0 of the wallet. Downloaded it 3 days ago.