EA Account linked to "account".

I've been attempting to link my current Twitch account to my EA one, but it isn't working. Supposedly, it's linked to a jumbled mess of letters and numbers which doesn't exist. It's been a problem for me for at least two-ish years (stopped me from getting any MCS cards in both MUT 24 and 25). Every time I attempt to link up my Twitch to my EA, it says these exact words: "Your accounts can’t be linked because the EA Account for [email] was previously linked to the Twitch account for ["account" that is nonexistent]. An EA Account can only be linked to one Twitch account in its lifetime.

 For more info, visit help.ea.com."

When visiting the suggested site, it gives nothing but the "How to link to an EA Account" article that gives exactly zero helpful info to solve my problem. The last time I tried this, it sent me on an approx. 3 hour wild goose chase of going through site after site to try remedy it that ended with nothing being accomplished.

Any help would be great, as I'm getting tired of it. Attached below is the notice I always get when trying to link up my proper Twitch.