Hi, @jazavchar. I was having the same problem as you and I even sent Hady my MyClippings.txt file so that he could help me identify the problem. Two days ago, he wrote me telling me that the latest plugin update (v0.2.13) should work. I’ve just updated my plugin and it worked perfectly, uploading more than 90 books. It took a little time after selecting my file but I could see the popup window changing. So my advise would be to check if you have the latest update and try again.