Works perfectly well in all screen sizes

I’m using it with OceanWP theme, and it works like a charm, both in desktop and mobile, no issues at all. No weird jumps, no errors in console, no ads, no ugly backed settings, just perfect! Clean coded, light weight, well presented settings and instructions.
It even adds some markers in case you want to further customize the sticky element with CSS.
A big THANK YOU to the authors!!