I messed up free agency in my league

It was supposed to be FAAB and I checked the day before the draft but after the draft I noticed its set to standard on ESPN. How should I fix this. It says its locked after the draft…I feel like crap for making the mistake

Restart the league with the right settings and manually import the draft?

Create a new league, manually input their rosters, be sure to set it to FAAB when you create this new one. Any current waiver adds people want to make, have them send their FAAB bid to you. The catch is you cant bid on the same people that would be unfair, knowing their bids