Hi there!

This is my first message to you. Please excuse me my not perfect English language, but I will give my best.

At time we are mining the next block for a creating.

But what is here happend? We are mining since a couple of weeks an we do not create it?

The potential block header have a "Nonce" included. If I math this, the block would be found since some days.

Last week the difficulty was changed (by Admin?) or from the poolsoftware?

If the Admin have changed the difficulty manuelly, I think, we are mining the potential new block from beginning, because the "Nonce" is not more correct (the last shares before this change).

Have a lot of luck to create the next block,
witch regards...

P.S: The Pool does not create a potential block above 15 BTC, a lot off time it is fall back to 12,5 BTC to a new calculating.