In the task market, pressing the reward button on a card reserves the task for you and sends you to the target.
Actually perform the action on that social network, then confirm it in the panel. Verification runs in the background.
If verification succeeds the reward is credited and you get a notification. If it fails the task is rejected and no reward is credited.
Approved work is re-checked later. If the action was undone (unliking, unfollowing), the reward is taken back.
If a task is not suitable, use the warning icon on the card to report it, or block the user. A blocked user's tasks never appear in your list again.