[Smush Pro] Image Upload Issue

After installing Smush, when I try to upload an image it says Connection Lost:

https://cdn.livechat-static.com/api/file/v2/lc/att-old/8801096/537a496a5d6b3dd3b6f65bf95f689c58/Capture%2018.PNG

I disabled the Smush on Upload option, but made no difference, can you help me?