Hi,
I read your post and it sounds like an incredibly tough situation. I’ve been through a Pending Termination Notice myself, so I truly understand how stressful this can be.
I’d like to share my experience just in case it might be of some help.
At this stage, it might be more effective to focus less on defending the anti-virus app’s innovation and more on protecting your developer account and your livelihood. In my own case, focusing on a few specific points in my appeal seemed to make a difference:
Clarify your intent: Since the app was flagged as malicious, you might want to clearly explain that you had absolutely no intention of misleading users. While your personal situation (such as losing your source of income) is completely understandable, Apple’s review process is guideline-driven, so I think it might be more effective to keep the tone as professional as possible.
Write a concrete preventative measure: I mentioned this in another thread recently, but I believe including a clear preventative plan makes it much easier for Apple to accept your appeal. If you decide not to pursue the development of this app that caused the misunderstanding, stating that clearly might help strengthen your case—though of course that's ultimately your call.
Establish good faith: You’ve been a developer since 2009—that’s a huge asset. Reminding them that your other apps follow the rules might help show that this was an isolated mistake, not a pattern of malicious behavior.
In hindsight, it might have been better to appeal directly to the App Review Board when the app was first rejected. However, considering that the situation has already escalated after multiple exchanges with the regular App Review team, instead of continuing to argue about the app itself or the review process, I believe it might lead to a better outcome if you apologize for causing a misunderstanding and show a strong commitment to complying with the App Store Guidelines moving forward.
I really hope things work out for you.