HandS up

https://www.merriam-webster.com/dictionary/hand%20up
https://www.collinsdictionary.com/dictionary/english/hand-up

Yes, that’s a verb phrase. I thought this post was about someone being held up with a gun and the robber says Hands up!

Yes, for this meaning capitalisation looks very odd. That's why I decided not to add a translation.

You were right. I’m with you!