It is really unfortunate that the creation date of the account is no longer displayed.
Signed date and creation date are two separate metrics whereas the latter has been established and has been around for a long time.
The account creation date was THE METRIC to find a trader that has been on the platform a long time.
“Not signed” sounds very bad, but “Account created 700 days ago, but not signed” would be trustworthy.
It is unfortunate to reassign the meaning of the term Payment account age. Bitcoin also has two fields for the old and the new transaction id: txid vs. hash
Please show BOTH dates.