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@SHD-Miles 

To fix the account You need to reset the password on the linked EA account that account has the persona irradiateddoomed (not SHD-Miles your posting on now) "that EA account" uses a comcast.net email address

use the following link to reset the password then login on that EA account to fix the swtor account for purchasing

for future purchases, use incognito mode on chrome initially if you purchase on swtor.com to be sure browser cache and cookies is cleared