When reporting online you get 2 emails if approved, the first is acknowledgement of the report, the second confirms the report has been accepted or rejected. Don't confuse the first email as confirmation.
well you actually can for the first year if you have the income verification certificate from your embassy, but there are only a handful of embassies still giving those. The monthly deposits are to qualify for the extension, not the visa. Keep in mind, what the MFA who run the embassies thinks is gospel to get a visa, is not gospel with immigration who grant extensions inside the country, and vice versa. So don't rely on either when it comes to jurisdiction of the other. What you've shown is Embassy/MFA criteria.
If your first and middle name are both on the given name field in the passport, then enter your middle name in the middle name field of the application form.
The 7 days is not a grace period. It's a reporting window. You report because you stayed 90 days. Read your first sentence up to the comma, again and again and again