Swtor username ? need that to flag to check the account
although not able to purchase on swtor.com is a strong indictor of an account issue , likley the account is disabled for purchasing , when this occurs gametime cannot be added to the account , not even by swtor support until sorted.
for now email the code into support@swtor.com from the email address you have used on the account
The_Girl_Jedi is the SWTOR username.
is flagged with support to check your account for issues and to check they have your email with the code
response will be in about 10 - 11 hrs when support are online here
you will need to call swtor support when the phone lines are open to fix an account issue on that swtor account
https://answers.ea.com/t5/General-Discussion-Technical/INFO-Getting-Help-and-Board-Guidlines/td-p/48...
support have an email but cant add gametime until the account issue is fixed
