Logg in as design5279e and request access to a private site. This is the email the owner (design5279) receives.
Open with: Internet
Log in to WPAndroide 5.8 (beta) and click People.
Note there is only one user listed under People > Viewers.
Send a viewer invite to a username not already a user or viewer on the blog (design5279e).
This is the screen you see in a browser after clicking link in the invite email. Note: I couldn’t see an obvious way to do this step via the app, should the link the email open the app if the app is present on the device you are using?
Log in as the invitee (design5279e) and click the email link again.
Notice the green status bar at the bottom saying you are now a viewer of the private blog.
Go back to the app. Note that the People > Viewers page does not automatically refresh.
Browse away and browse back and the new invitee shows up.
Here’s the email the blog owner is sent when the invitation is accepted.