The time has come to lean into learning more about the JavaScript API. I have an old ArcGIS Online developers account that isn’t active anymore. I'm trying to login to it for learning purposes. I get this message

I pay the $100 for 1000 credits (seems like a deal) and I try logging in again….Same message.
So I figure credits aren’t the problem so my subscription must be expired. I go to the licensing tab of my.esri.com and I see this

But I can’t login as any login that reveals my ADS code and I have no emails from esri containing it. I’m just a $100 customer so not sure I can get technical support…. Does anyone know where I can get this code or if this will even fix my problem. Any suggestions would be helpful.
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P.S. I’ve lived in a comfortable bubble of not having to deal with licensing for the last 8 or so years. I knew it was getting confusing but come on man: There are so many web pages and logins, user levels (AGOL, Portal, Licenses, Add-ins, groups, content….) and interconnection between them all… its like a full-time job to keep it all straight. I don’t want to just throw up my hands and give Esri 100 bucks for credits I never use because its too confusing (and takes too long on the weekends) to figure it out.