Regarding changing an offline PIN:
JEFFJAGUAR seems to imply a few pages above that USAA is moving
away from offline PIN. If so, then once you get a replacement card, PIN changing won't be an issue, if your only offline card is currently from USAA.
But anyway, it apparently can be done at any EMV-enabled ATM. Someone with the Diners Club US chip & offline PIN card was
given a procedure by issuer BMO for (a) calling BMO, then (b) within 12 hours using an EMV-enabled ATM. But I haven't tried myself, and haven't needed to try myself (I happened to find my one offline PIN easy to memorize, so I'm just leaving it as is).
And, btw, "any EMV-enabled ATM" doesn't even necesarrily mean a bank's own ATM. It might also be possible at third-party (non-bank) ATMs as long as they're EMV-enabled. (It may, however, need to be on the same network that your card uses.)
The reason it needs to be done at an EMV-enabled ATM is because the changing of the PIN requires writing to the chip, and only an EMV-enabled ATM has the hardware/software necessary to be able to write a new PIN to the chip on your card.