Hello!
You're likely encountering a system error with the AMD x LTT Sweepstakes. Despite Mexico being advertised as eligible, the "unavailable in your region" message strongly suggests a technical glitch or misconfiguration on the organizer's end, rather than your entry process. Your best course of action is to immediately check the official Terms and Conditions for any specific exclusions, and then contact AMD and/or LTT's support directly, providing clear details and screenshots of the error, as they will need to resolve this discrepancy. Dog to Human Translator