Latest update (July 2017) will not download...

I have been using this app for a very long time and have thoroughly enjoyed it. I use this app almost exclusively to create, save, file, and/or organize most of my documentation that comes from many multiple sources both online and offline. However, the most recent update will not download to my iPad at all! I have tried every suggested solution I could find online with regard to Apple/iTunes/iCloud problems with updating apps—but, alas, to no avail. And I have had no other problems with downloading the updates for any other apps I have and use. Therefore, it seems that the problem is with only this particular app. And, given how much I use and rely on this app, I do not know what else I can do to get this apps latest update to download and install. Once this problem is fixed, I will be more than happy to change my rating to 5 stars. PLEASE HELP ME or FIX THE UPDATE. Thanks in advance!

Clotaire about Documents: File Manager & Docs, v6.0.2