Your comments

I just have 1 TH/s from Nicehash on the pool without any rejects. Our own shares will of course not be counted.

I'm going to try this myself.

The website will be updated today to make all of this more obvious.

That's the last block found on the entire Ethereum Blockchain.

The Ethereum Pool has yet to find its first block unfortunately because it is still very young and needs more hashpower. Here is an example of an established pool (note the Blocks, and Payments Tabs): https://poolmining.org/pool/xmr

No block was found since you started mining. That's why.

I'll be monitoring this issue and your account for anomalies for some time. I would like to get to the root of this.

Strange. I've seen some rejected shares for your account but not 100%, not even 50%. Right now all of your shares get accepted and I can observe your share counter increasing.

Did you order from Nicehash's USA pool or the european one? (Hint: you should chose the latter)