To add in with happyserendipity, there was a 7 day gap in between 2 blocks once (Blocks 101159 and 110134) The effort for 101159 was 14% and the effort for 110134 was 210%.

Also the last block(124095) we got had an effort of 151%

Yes, all coinfoundry.org daemons or servers are based in Germany.

however I advise you should only mine with your gpu with xmr stak because of the ports Oliver has set up. You should still mine with your cpu with xmrig though

If you see this Oliver correct me if im wrong about xmrstak and the ports

Yes you can mine ETN with xmr stak. You should have noticed a higher hashrate because stak allows you to mine with your cpu and your gpu. xmrig only mines with your cpu, thats the reason for lower hashrates.

First off - How long have you been mining? the last block was 2 days ago for mona

You are payed based on the amount of shares per block. (the whole definition of PPLNS)

I just forgot you said something about that. OK, that amount seems to be not suspicious anymore. Thanks for reminding me :)