A transaction can't be confirmed and unconfirmed at the same time.
I guess your transaction has been already confirmed and included in the blockchain, but your wallet doesn't show it as a confirmed transaction because it's not fully synced.
What's the number of blocks shown at the bottom right corner of the window?
Can you share the transaction ID here? (Note that you may hurt your privacy if you share the transaction ID. Don't do that, if you care about your privacy.)
Did I do something wrong checking the RBF box on sending & how can I get the transaction to confirm?
No.