@Henrik **********
You can "not agree" all you want, but I'm telling you that you're 100% WRONG and I'm not gonna let you scare monger people with bad advice 😮 🙁
Failing to file a 90 day report on time is NOT overstay, it has NOTHING to do with your current extension and is only a fine for not filing a 90 day report within the window you're allowed to do it (from 2 weeks before the due date until 1 week after the due date)
It does NOT affect, entry, extensions, ANYTHING, not one thing visa related at all.