I believe is latest version, just downloded last week. OS is Windows 10, display resolution is 3840x2160, I have 3 screens. Display Scale Factor is 1.2. HiDPI modes is on MultiMonitorAware the recommended setting
I am also having this issue.
It's a really cool extension and I'd love to be able to use it but the text isn't legible for me.
UI zoom is now adjustable in v1.0.3. I hope that helps