If you think something should be accepted that isn't, report it. "Wake up" sounds much more natural to me than any alternative, but apparently that's not universal among dialects of English. No need to insult people like me for whom that is the case.
When you get an answer wrong, there should be an option to send in a report, at the bottom of your screen. At least, that's how it is on the web version; I don't know if it's the same on mobile, as I don't use that.