You're using Nicehash miner to mine at Nicehash, maybe you should ask them.
They also have a FAQ about rejected shares.
The reason for the reject is important and is usually reported when a share is rejected
but wasn't included in your screencap.
At first I've decided to change nicehash pool to other pools like ethermine but I later find out that the rejected shares are false alarm, my mining calculator said I will be making $15 every day and mining on nicehash pool give me the exact amount or a little bit over every 24 hours