What are the entry requirements for my Thailand Visa (DTV) after traveling to Argentina?

You can enter from anywhere.

The three month rule change seems to be fairly new, based on posts in this group, I would recommend rectifying with the issuing consulate by phone or email rather than rely on fb comments.

Thank You for your helpful report 👍

Congratulations 👏👏👏

PRINT OUT THE EMAIL THAT HAS YOUR DTV VISA.

That's what you should do... print it out.

You may have to show PROOF of your DTV Visa to airline staff on check-in for your flight ✈️ to Thailand...even to the connecting airline staff. Or to the land border crossing entry Thai Immigration Officer.

Upon arrival into Thailand, show the DTV visa to the Thai Immigration Officer and look at the STAMP placed in your passport to be sure you are STAMPED in for 180 days.

No and no, you can enter from anywhere

1) you have 5 years to enter. You can enter as many times as you want until the expiration date on the visa.

2) there's no requirement to enter from anywhere.