The support team provided me with the following response after I sent in more documentation:
The PSO2 Team (PSO2) Oct 14, 2020, 16:27 PDT Hello ARKS operative, At the moment, please know that we are still investigating this issue. Due to the complexity of this issue, it could take time to thoroughly investigate. We truly apologize for the inconvenience this has caused and we ask for your patience. We truly appreciate your support. - The PSO2 Team
Any update on this issue? The month is almost over and we still haven't' received the October perk for Xbox Ultimate Game Pass.