Okay, this is fun

I finally signed up for ProWritingAid (grammar checker) after hearing people in writerly circles talk about it for ages, and this is actually really fun to use! Just in the text that I checked it already caught one genuine mistake (I ignore its comma suggestions at least 50% of the time for sentence flow and clarity, but this one was legit wrong, left over from a previous version of the sentence). I'm probably going to spring for the paid version; it looks useful enough that it's a valid business expense.

I'm still figuring out the interface and I wish it was easier to see the sentence around the suggestion popping up in the middle of it (I may be able to change or move this; I haven't figured that part out yet), but it's actually really fun; it's almost like a game, and I like playing around with my text this way. We'll see if I'm still having fun after using it on a whole 70K novel ...

Questions for those of you who use it: do you use it in your browser, use the Chrome extension, or use it on desktop? If you use it more than one way, do you have a preference? Any tips or tricks you think I should know for ease of use?

Edit: To be honest, I genuinely can't figure out how to use the desktop version. I downloaded it, but it just seems to run in the background and not do anything? I can't get it to engage with text or give me a place to put text. It's possible I might need to upgrade my OS to get it to work right?