I sent a Technical Support Incident (TSI) request to Apple Support about a month ago, but I haven't received any response yet. The issue I need assistance with is my inability to subscribe to my iOS account, which is essential for me to upload my iOS app.
Support response
If you're not even getting an auto-acknowledge response via email, then the likely problem is that the email address in your developer account is incorrect or unusable, or responses are being routed to your junk mail or spam filters.
If you have the ack, what is the case number that was assigned to you?