I use Chrome with only one website for work. I was on this board a few weeks ago, fearing that if I upgraded from v. 63 to v.67, I would lose my profile, which includes many Tampermonkey scripts. I completely uninstalled Chrome, except for the profile, and all went well.

Current problem: Since then it has reverted back to 63 twice by itself. I know it's happened again when it tells me my profile is for a later version. If this is a weird problem, I'll join the Chrome forum at Goo.