Permanent Residency from marriage. Has it expired?

[bdk1]

You mentioned your ex was on a repatriation flight organized by the consulate. Did he have to do that to make sure they would let him in the country during a COVID times? I would hate to get there and get sent back without being let in.

Yes, but this was in May, when the only way to go back to Argentina was still through consulate-organized repatriation flights. Since July, provided you are a citizen or a resident, you can just hop on any scheduled flight without prior consulate approval.