US Immigration from Zimbabwe

My fiancee is in Kwazulu Natal and with all the unrest going on over there, I'm legitimately afraid that she could starve there. Is it even a chance that I could ask to speed up the process?

I was looking on the Visa Guide and it says to print out a form I-134 Affidavit of Support. I printed it out from the link on this website, but as I was filling it out, I noticed it has an expiration date of 2/28/21. Does that make this form invalid?

I sent out my I-129F petition and documents last week. According to the tracking, it's been available for pickup in the Dallas PO Box since February 11th. I checked the tracking again today and now it is telling me I need to arrange for Redelivery by February 25th or they will return to sender on February 26th. So they're just not even going to pick it up?