Fyber Rewarded Videos and offerwall iOS

I am working on the Fyber SDK to show offer wall and reward videos. I have implemented proper code for it by following its documentation. Earlier it was showing the Game Ads properly but suddenly it stopped working. I am unable to find the reason behind it. Now I have added two ad networks i.e. Facebook audience and AdMob (Refer attachment)

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I am getting following error:

• [FYB Info]: RV client asks to validate a TPN: facebookaudiencenetwork
• [FYB Info]: Provider facebookaudiencenetwork integrated: NO
• [FYB Info]: Videos from facebookaudiencenetwork validation result: no_sdk
• [FYB Info]: RV client asks to validate a TPN: admob
• [FYB Info]: Provider admob integrated: NO
• [FYB Info]: Videos from admob validation result: no_sdk
• [FYB Error]: No video offers are available

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