Confirming a round is how you sign off on your group's scorecard — one tap that says the scores for your group are right. Each player in the group confirms once, for the whole card, and your confirmation covers the card rather than any one person's line.
How do I confirm my scores?
Enter the last hole of the round and the round-complete screen appears with a single Confirm scores button above your group's totals. Tap it. You can also confirm from the full scorecard page for the round, which has the same action lower down under Score confirmation.
Any player who played in the group can confirm, and so can a commish or admin. Managers can confirm for a round whether or not they played in that group.
Do I need everyone else to confirm before results appear?
No. Game results — skins, points, matchups — are worked out as the round is confirmed, and the round and the event finish on their own based on play, not on who has confirmed. Your confirmation is a record that you vouched for the card; it does not hold anything up, and nobody's scores are hidden while confirmations are outstanding.
The scorecard page shows how many of your group have confirmed, so you can see where everyone is up to.
What does disputing do?
Disputing a card says "I'm calling these scores into question." It records your objection instead of your confirmation and flags the card for your commish to resolve. Use it when a score is wrong and can't be sorted out on the spot.
Dispute from the full scorecard page for the round, under Score confirmation — the page where the whole card is in front of you. It isn't on the round-complete screen, because disputing is a deliberate step rather than something to tap by accident on the way off the green.
What if the scores are wrong?
Fix the score before you confirm. Scores stay editable during the round, so correct the hole and then confirm.
If you have already confirmed, you cannot change your own mind — ask your commish. A commish or admin can clear any player's confirmation, which lets that player confirm again and recalculates any affected results.
Should I photograph the paper card?
Yes, if your group kept one. After you confirm, the round-complete screen offers to take a photo of the scorecard, and the full scorecard page for the round accepts photos at any time while the event is still open. The photo is a record of the paper card in case a score is questioned later; it is not used to enter or change scores.
Is this the same as signing a card in a tournament?
Not quite. In a stroke-play competition one marker certifies each player's card (Rule 3.3). Here, each player in the group confirms the group's card, which suits a league played on a phone. Treat a confirmation as your group agreeing the scores are right, not as a formal certification.