Your work gets registered in shifts. When someone mining in the pool finds a block you get paid. Your share of the coins from the block depends on your share of the work done in the last 10 completed shifts. If you stopped mining then after a while there will be new shifts where you have done no work.
There is a new shift as I see. Is that means if a block found I will receive nothing for mining for a month (I stopped my S7 about a week ago) ?