APPID:wx74059d0f32bf8faa

激励视频加载转圈，无法看视频.体验版本没问题，正式版本就没法看了。

if (wx.createRewardedVideoAd) {

let randomNum=Math.floor(Math.random()*4);

switch (randomNum){

case 0:

rewardedVideoAd = wx.createRewardedVideoAd({

  adUnitId: wx.getStorageSync('adUnitId0'),

  multiton: true,

});

break;

case 1:

rewardedVideoAd = wx.createRewardedVideoAd({

  adUnitId: wx.getStorageSync('adUnitId1'),

  multiton: true,

});

break;

case 2:

rewardedVideoAd = wx.createRewardedVideoAd({

  adUnitId: wx.getStorageSync('adUnitId2'),

  multiton: true,

});

break;

case 3:

rewardedVideoAd = wx.createRewardedVideoAd({

  adUnitId: wx.getStorageSync('adUnitId3'),

  multiton: true,

});

break;

default:

rewardedVideoAd = wx.createRewardedVideoAd({

  adUnitId: wx.getStorageSync('adUnitId0'),

  multiton: true,

});

break;

}