Hey!
I was able to get my Capital One CO removed from 2016 through a handwritten dispute. All I said was this account was promised to be "Pay for deletion, but it's showings on your report still. It has been deleted from all other Bureaus except yours! Please remove and update my Credit Report"
Not sure if it was luck or skills. Lol 😂 But also since you have the settlement letter include that with your dispute which proves the charge off is in an "Inaccurate" status, which should prompt the Bureaus to delete it.
Good luck!