Oh gawd. Thank you, Andavari. I had clicked on each tab and I thought I'd looked carefully for that option. I guess not. Thank you!
I was prompted to update to v5.55.7109 64-bit, which I did. When I try to disable system and active monitoring, I cannot find "monitoring" under "options". There's: settings, cookies, include, exclude, scheduling, smart cleaning, users, updates, advanced, privacy, and about, but there is no "monitoring". I googled this issue but haven't found one mention of it.