Hello WildTurkeyOld, thank you for getting in touch and sorry to hear you have not gained access to the game yet.
At the moment we can only help players with purchases made directly from our Ubisoft Store. We recommend purchasing the digital version of the game from one of these approved resellers - https://support.ubisoft.com/en-GB/Article/000079502
In order to get help with your purchase and the missing email you were supposed to receive, you will need to get in contact with OXXO directly for further assistance, thank you.
At the moment we can only help players with purchases made directly from our Ubisoft Store. We recommend purchasing the digital version of the game from one of these approved resellers - https://support.ubisoft.com/en-GB/Article/000079502
In order to get help with your purchase and the missing email you were supposed to receive, you will need to get in contact with OXXO directly for further assistance, thank you.