Amp Slide Cart Upsell Drawer

I tested multiple shopping cart apps but basically had bugs or didn't fit with my theme, I tried to install this app to do the testing and went live, I didn't realize that their customer service took the initiative to check my website and found the bugs and posted an article guiding me to make the changes. Unfortunately, my theme is not a commonly used theme and I couldn't find a place to modify the code, their technicians supported me very quickly and helped me solve the problem, very good service!