Requests yes - but no impressions, "No Adapter Found"

[BG Nature Trip]

Hello

For one month I posted a video game developed in Unity for Google Play, and for the moment I have 220 active devices. For the period - one month there are nearly 3000 requests for ads, but there are no impressions. 

I am sure that everything with the codes is right - in Unity I see the sample interstitials. In Google Admob, I see that everything is correct with the approval of the app. Also, the file  app-ads.txt  is found and approved. I also have a Google AdSense account that is working properly. I did before for it  Address verification with PIN . I also did this setting here in Admob: 

Admob > setting > Account Information > seller information > change to > Transparent

I also have a Google Ads account and successfully paid for an advertising campaign for the app to popularize it.

What could be the reasons for this? Not enough requests? I also implemented Ads Inspector and this here are the problems that I see: 

"No adapter found". Is it possible to need more time, or more requests, or something with the mediation group? I did not use a third-party companies, only Admob (default) mediation group. Attach pictures from the Ads inspector. How can I fix the problem?

[Mobile Ads SDK Forum Advisor]

Hi BG,

Thank you for reaching out to us. 

Since you mentioned that you were able to load/display test ads, then this confirms that your code implementation of the Mobile Ads SDK is fine. In order for us to check your impression concern, could you please provide a Charles Log (https://www.charlesproxy.com/documentation/getting-started/) - Instructions (https://support.google.com/admanager/answer/6206401?hl=en) capturing the ad request? You may send the requested information using the steps below.
 

1. Navigate to

https://docs.google.com/forms/d/e/1FAIpQLSfkAiXMeYP-fw1W3Z-tT9uwmATEKO5X6S-th0gR2ezdKaaqfg/viewform?usp=pp_url&entry.400550049=Mobile+Ads+SDK&entry.460850823=5004Q00002ncpmgQAA&entry.80707362=00192130

2. Fill out all fields, and attach your file(s).

3. Please reply back on this thread when you have uploaded your file(s). Please do not share this link.

 

This message is in relation to case "ref:_00D1U1174p._5004Q2ncpmg:ref"

Thanks,
 

Mobile Ads SDK Team

 

[BG Nature Trip]

Thanks for the information.
Actually, I expected to have any more easier way to solve the problem, maybe with this Ad inspector, or to find somebody here, that has more knowledge about the options of the Ads inspector.
These steps look too complicated to me and will take more time to understand and do everything. If I don't find any other way, then I will start to investigate all these steps and work with Android Studio and all these programs. 
Thanks