I have a cube

That is 40mm x 40mm

Power and Volume DOWN would make infinitely more sense for “power DOWN” function.

I feel like that is a broad sounding date range that is actually pretty specific, and puts your 55th birthday some time in the next 5 months.

disc disk

Got ‘em!

Laymen with no understanding here. Obviously there were other mistakes, all of which make sense to me on a rudimentary level, but the first mistake you listed was him using wifi? What is the more secure alternative? Or do you just mean sending data directly over a true wifi connection and not using TOR or another medium?