I have come to expect a few really dumb rejections - imagine you are a reviewer and the boss has given you a quota...  It is reasonable for you to find the simplest first thing you can imagine to reject as many apps as you can.  Right?  Not saying all of them do this - but there is a high chance that the process design goes non-linear toward the dark side.  

So you just respond calmly and address the questions.

No this App is not a Crypto Exchange.  It is a basic stock tracking tool.  What in our product page mislead you to that conclusion - I'm sure we can fix it.

As a solopreneur, you're going to run a few ... shove a book down the back side of your pants and get to moving...

"Through the gauntlet" (or more commonly, running the gauntlet) means enduring a severe, challenging ordeal or public trial, historically a form of corporal punishment where someone ran between two lines of people who struck them. Metaphorically, it describes facing intense criticism, tests, or difficulties one must overcome to reach a goal. 

Now we are in the App Store.

There are still a thousand things to improve... but I have to get customer #1 some time...  how about today!

App:  Stock Portfolio Equity Curve