The "contrato exclusivo para la obtención de certificación de antecedentes penale" is what they are requesting, yes. When my husband gave me his original police report to submit, I guess he didn't realize that the contract was important so he didn't pass it on to me. I had no idea :/
They are requesting that contract from his original police report that was submitted, which thank god he still has! I'm going to email them a photocopy and ask them if the original hard copy is needed as well. I'll then try to send this from Cuba to Mexico if they need it.
Freaked out a little bit there lol - thanks everyone!