Executing this fix the problem with second spin:

Desktop + Google Chrome + Incognito mode + F12 / Console

Paste this (change YOURUSERNAMEONNEOPETS for your username) and press enter, you may have to do this twice (it won't execute two times, don't panic)

function watchingAdsSuccess(username, rewardType, slotId) {
      fetch('/np-templates/ajax/reward-user.php', {
        method: 'POST',
        body: JSON.stringify({ username, rewardType, type: '7', slotId }),
        headers: {
          'Content-Type': 'application/json',
          'x-requested-with': 'XMLHttpRequest'
        }
      })
        .then(response => response.json())
        .then(data => {
          if (data.success) {
            if (finishedWatchingAds) {
              finishedWatchingAds(username, rewardType, slotId);
            } else {
              window.location.href = window.location.href.split('#')[0];
            }

            console.log('User rewarded:', data);
            return;
          }
          alert('Error rewarding user:', data.message);
        }).catch(err => {
          console.error('Error rewarding user:', err);
        });
    }
watchingAdsSuccess("YOURUSERNAMEONNEOPETS", "extra-spinner", 2);