i tried this pool also and there is same for me ... my miner shows that accepting shares but on the pool nothing ....
Isn't a problem, just mine in a pool with some worker that are able to submit a block
A share, is submitted only on a "certain diff", i mean:
if the coin diff is 1, you have to mine 100 share at 0.1 diff.
Now the PoW diff is 68.5, so you have to do x=68.5/your diff before see a share