@Asllan0509
You need to reset the password on the linked EA account that account has a gibberish persona (not asllan0509) that EA account uses the same email as on your swtor account
use the following link to reset the password https://signin.ea.com/p/web2/resetPassword ( using the swtor email ) 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
as to the steam purchase if that was sent using the email on the swtor account it does not appear to have arrived
if an option call swtor support when the lines are available and they will get you to upload the required screenshots per the sticky