can you also tell me how to bid correctly? and what's the difference between limit and speed? because sometimes I see the ehs speed lower than the limit does that mean this miner have some hard or software failures?
It seems like most of your recent questions are related to "how to use Nicehash", it would be great if Willi or someone else who uses the platform very often can write a topic explaining how to use the service, it's pretty simple but the fact that you have to ask all these questions suggests that many people struggle to use it but are afraid to ask.
most of the videos related to it are very old unfortunately, and the error I had it has no results on google so, yes that would be perfect if they create it.
. I think it was 12 people who contributed to the group rental and split the reward. It was block 780525. 
I have seen several people hit by renting. You can see if you look back far enough in this thread. There was a person from russia who only rented 5PH and hit, within the last couple months, but then he posted that due to some virus or malware, someone stole most of his BTC 
. Also you can see from past posts that someone renting a huge amount of hashpower hit two blocks, not too long ago. That person never stepped forward, but they certainly have balls of steel for how much they spent on rental, as was noted above by others. It paid off though with two blocks! It is definitely possible. but it is a gamble. If your electric rate is too high for home or hosted mining, you are better off just renting on nicehash, in my opinion. You have to be careful not to overpay on nicehash though. The mining power goes to the highest bidder, and some people overpay, especially recently. So you have to bid a reasonable amount, and be patient to wait and get your hashes once the overpriced bids run out. I would guess that many, if not most, of the 273 solved blocks on the pool are from rentals.
he succeeded in it on his last run so I guess he has plenty of coins now to try another run 