A few weeks ago, a Discover credit card account that I am an authorized user on was removed from my TU and Equifax credit reports. I’ve been in contact with Discover and they’re not showing anything on their end that would explain it. I did do some disputes earlier this month and got the results back the other day and it looks like the account was removed in connection with that. The problem is that it dropped my score significantly since it was my oldest account and had the highest credit limit. How do I get this account back on?