If you are attempting to use the registration / serial code to install a game, create an account or register the game on the SQUARE ENIX MEMBERS's site and receiving an invalid registration / serial code error, we recommend trying the following:

-Registration codes consist of a combination of letters and numbers (These will all be in UPPER CASE)

-Many letters and numbers can be mistaken for others, see some common examples below:
-8 [eight] and B [Bravo]
-0 [zero] and O [Oscar]
-A [Alpha] and R [Roger]
-5 [five] and S [Sierra]
-I [India] and 1 [one]
-A diamond shape is likely to be an O [Oscar]
-A square shape is likely to be a 0 [zero]

If you are attempting to register the code to the MEMBERS's site, please make sure you are using the serial code located on the MEMBERS's insert included in the package

Even more detailed information can be found on the MEMBERS Points registration page located at: https://member.square-enix.com/na/points/
Note: Login to the members site is required to view this page

If you are still receive an invalid registration code error after trying all of the above, please contact support by using the "Additional Assistance" button.