OK, at this stage you have the ads working in test mode but not in production ?
no problem, goto the manifest file in line 21 verify your admob id application (90% of cases users forgot to change this parameter).
keep in mind, that the new unities created under Admob take about 2 or 3 hours, to be shown.
With the new updates from google :
1- You can’t show the ads in the production mode, you have to publish it in playstore, make it as version alpha or beta for your test in the console, and when all is fine make a release to be available for users.
2- The package name is very important, if someone was already used the same name and his game or application was suspended, this will create a suspected thread about your application. so try to make your package names unique.
The package name is a big subject, basically, be careful: avoid brand names, it creates a conflict with the name of the brand, certainly, it will generate good traffic but an inevitable suspension. never use something like : com.konami.yourgame or com.sega.yourgame …
3- The icon : if the icon contain transparency this may generate a first reject, with the new update from 03/15/2019 it is necessary to remove the transparency and rounded border in the icone. Google try standarize the form for icons and the new version of the os will add automatically the rounded style when necessary.
4- Access : This is a game, we can make access to the network http and https (necessary to make ads working !) may be an access to the market, it’s ok. but the access to sms, contacts, camera, recorder, geo, ... is not acceptable by Google.
So : verify your file config.xml for the tags with : allow-intent.
5- The version : don’t use a value like 3900.0.3 it’s too big and generate bots detect it as suspect. please use something like : 2.0.1 or 3.0.0 … not 3900 !
6- SEO and Originality : most of users forget this part, in the config.xml : add a description max : 512 char. Author name : must be the same as used in the console author name. email : must be the same as used in the keystore and same as the email for IARC (International Age Rating Coalition).
GRADLE – KNOWLEDGE IS POWER