If, like many other players, you cannot buy the Sonic Pack or other PSO2 packs in the USA Shop by Paypal / credit card because the error message “The region where your payment method was issued and your Microsoft Store region need to match” appears, I have created small instructions how you can still get to the packs by credit card.

https://docs.google.com/document/d/1xf62mHGIjgjtr98bInUR0FDPyUYIUODKBhb4kMgmLxg/edit?usp=sharing