I did fix the problem, it was berceuse my EA account was disabled. In order to reenable, you must go to your original SWTOR account on EA, and update your password after you call customer service and speak to an advisor. I appreciate @Kazuone, and @OwenBrooks, as well as the Customer Service Team for helping me solve this problem!

Hello, I am a returning player after a long 12 years of playing SWTOR, trying to acquire my subscription again to get to level 80, I am a level 75 max juggernaut as of right now. Last I played was the Fallen Empire, anyways to the point.. I was attempting to buy the SWTOR subscription again to get obvious benefits. However, it keeps on giving me an error saying I cannot use this card, etc.. so I went to the bank. Got a entire new card, and tried it. Still didn't work, I used my PayPal, as well one of my family members PayPal's to see if that would resolve the situation it still just errors out. I am led to believe; it because SWTOR partnered with Steam? As when I played, it was never on STEAM games to download. But I am seeing from others on the forum too that subscription, as well as Cartel Coins purchased through steam don't got through either? In all honesty, even though it is unfortunate on my end as of current. If anyone else is having this issue, purchasing the subscription through the actual game, beyond the fact of getting it on STEAM it's self.