I been trying to update my credit card for realms. I double check all the information for my CC and nothing seems to work. I'm in the US using a issued CC.
Please let me know how can I pay so my realm does not end.
Error:
"error":"IllegalArgumentException","errorMessage":"There was a problem processing your credit card, please double check your data and try again."}
That would be a billing error which in this case you should contact Mojang support here: https://help.minecraft.net/hc/en-us/requests/new