Slidein plugin from wpmydev stopped working

Downloaded and installed Slide in. Slide in was working well when we installed. went well for few days and then it stopped working.

it doesn't seem to be working on our site right now. We are using it to capture emails through mail chimp integration. The slidein comes up as per the defined rule of 50% content but its not taking emails and it doesn't show anything once subscribe button is pressed?

I can give access.

Thanks, Amit