So I accidentally let my sub expire and I immediately signed back up again. So I got into the game and realized that my retainer service was Inactive, so I go back into the Mog Station and I don't see an option to reactive the current retainers. So I used the Retainer Service button and added back the number of extra retainers I had (4) and now I get this error when I try to pay for them:

An error has occurred.
Please confirm the status of any relevant options and then try again.
For details, please contact the Square Enix Support Center.
(Error code: 601)

I used the exact same CC I did when I paid for my sub just a few minutes before.
Has anyone had this experience before? How can I get my retainers back quickly?

I am a prolific crafter and I have a TON of items now locked before the patch that I need access too.