This plugin: "CoronaProvider.ads.admob".
should not be used any more. Google is killing it in a month or so. We've not had it up for new people to use in some time.
AdMob V2 "plugin.google.play.services" is our current version of AdMob. It however uses an incompatible version of the Google Play Services to what Google Analytics needs. We are working to solve this on multiple fronts, but it's a huge project with many moving pieces.
We understand this is a big issue and we are working on addressing it as fast as we can. We still have a lot to do.