On top of its unique features, dua.com has a handy "Undo" option that's bound to help you.
If you accidentally slide a profile to the left, don't worry. You can Undo this action and save your potential match. To undo, tap the circled arrow button in the user's profile.
Remember: You can only Undo the last action you took, such as Disliking. To access this feature, you need to subscribe to dua.com Premium.