OneNote application not launching/opening (android)

I found Evernote's paid personal subscription a pretty good substitute for those who might not be comfortable installing an old version of OneNote. I think the unofficial app source such as Apkpure is pretty low risk though. I decided to go with using the old OneNote app since I need ongoing access to my past customer data, in addition to already being habitually trained to use it. It actually does everything I need it to do pretty well. An email button would be nice. Highlighting text for copy/cut and paste is a little challenging in Android OneNote. Select all doesn't really select all. Both OneNote and Evernote work well on a Win10 PC/laptop too. Highlighting with OneNote behaves strangely on Win10 as well. While trying to select a whole page it misses the odd word visually, yet captures them anyway, as evidenced by the resulting paste. Weird but acceptable. Maybe it's on Microsoft OneNote people's bug fix to do list.

My Samsung Galaxy S8 Active dreams of the exuberant day when it can flawlessly run a OneNote installation. Hopefully before it experiences complete obsolescence or the natural death of its battery. A small ceremony will be needed in all cases. Is it just me or is my battery discharging faster than normal. I can't afford a new phone. Good luck OneNoters. : )