When I start developing /updating an app, I devote all my waking hours to that app - except when I am eating or I am watching TV or I am cooking. No, the high light here is one app. I devote my time to one app. Only after I release that app, I can move on to next app.
So that's what was happening, when unfortunately admob decided it no longer shows ads in my app. I was worried, angry and upset. Nothing new in that. Then I thought, let me update the app with new ad id and publish it again. But when updating, I need to resolve bugs (and introduce new ones). And why not add more features. Like material design. Don't smirk saying material is almost 2 years old. None of my apps still had that feature. So came material design and recycler view instead of list view. Then came long list of new papers. Adding them, testing them, changing the names to regional language and back to English.
In the mean while I tried admob with new adid. Not working still. I tried adding other ad networks. Not working and some sets of new strange problems. So I decided if God (or admob) decides that my app should generate some revenue, he will guide me in some way. Until then, no ads please.
The app really looks good now. You can search for a paper. You can save favorite papers. You can read so many magazines, that you will run out of your time and wifi limits.
Download or update the app and read on and on and on ....