@Piratez_7
have flagged with support for monday
if you know the linked EA account to that swtor account try a password reset initially , can be the swtor email but it doesnt need to be anymore , it can be a previous email used on the swtor account too.
use the following link to reset the password https://signin.ea.com/p/web2/resetPassword (insert the swtor email in the link) 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