Called support weeks ago and after a lot of phone calls and emails, I informed MS that they can close the support ticket.
The issue was that I couldn't use my O365 login (MS business/org account) to log into Microsoft Office Mobile App. It would work with my personal MS account.
They said it was because I had the same address for both. However on the web, or with Android apps such as OWA, Outlook, Word and Excel worked with my O365 Account.
Earlier this week I read an article about new Android Apps and now the Office Mobile app says:
*** Try the new Word, Excel, and PowerPoint apps! Now available for Android tablets and phones in the Google Play store: http://aka.ms/worda, http://aka.ms/excela, http://aka.ms/ppta. These new apps replace Office Mobile. **
Microsoft Office Mobile is the Office companion for phones running Android OS prior to v4.4.”
So since my phone is 4.4.2, it's not supposed to work.
Virus plural is either viruses or viri. As it lacks a Latin plural (which would be viri) due to being a mass noun and misused in English there is a grey area as to how the plural should be formed, in the Germanic viruses way or the Latin viri way.
I prefer viri to be consistent in the use of the Latin for Latin nouns even if the Romans didn't use them as a plural, had they done so it would have been viri and our lack of knowledge of the word should not vary our usage thereof. I attempt to use this consistently although it is hard with so many words plural forms being unknown to English speakers (campus, bonus, fungus, etc.)