Hi,
Thank you for contacting the Mobile Ads SDK Support team.
With the release of a new major Google Mobile Ads SDK version, earlier major versions may be given a sunset date. After an SDK version is sunset, ad traffic from that version is at risk of receiving automatic no fill due to stopped ad serving.
Kindly check the document that lists the specific deprecation and sunset dates for each version. We encourage you to migrate to the newest version as soon as possible after its release.
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Mobile Ads SDK Team |