Hey Guys,
I had more than 1000 clicks per day at least from Last April to May, 2017. It performed very well and selling good.
However I removed some keywords in May, and then the performance getting worse and worse. Then I added the keywords back and still it does not work. Now I can only get about 10 clicks per day. I mean, I removed keywords, then I add it back, now no clicks any more. Is there anybody can tell me why and help me out?

Thanks a lot.
Jeff