This is normal and it is two separate things stacked on top of each other, which is why it feels worse than it is.
First, a brand new account has a waiting period before the very first payout lands regardless of behaviour - roughly one to two weeks depending on where you are. So even with no review at all, launch money was never going to hit your bank on day two.
Second, going from one test charge to sixty two sales in forty eight hours is precisely the pattern that gets a human to look at an account. Not because you did anything wrong - the same shape appears when someone takes card details they should not have, and they cannot tell the difference from the outside without asking you.
What they wanted from me: a link to the live product, a plain description of what the customer receives and when, my refund policy, and identity documents that matched the account details exactly. Mine cleared in six days.