i got the news,when will corona facebook Audience Network sdk become sdk 5.4.right now corona facebook Audience Network sdk is 5.3.X
Beginning today, we are asking all app publishers and developers to upgrade to the Audience Network SDK 5.4 and above before March 3, 2020.
Effective March 3, 2020 we will stop ad delivery to old versions of the SDK. Apps that are not up to date with our minimum SDK requirements will therefore see a drop in Audience Network revenue. We recommend upgrading to the latest SDKs as soon as possible to avoid impact to your ad delivery.