This is the problem:
First time install (of course main switch is on!) nothing happened! Junk calls came in without any reaction. Don’t know why.
Re-intall second try:
Did essentially same setup. This time works good. App stays around upper left corner persistently and intercepts calls like a charm and better than anything else I tried! Good!
Went overseas for a month and so uninstalled until returned.
Now like first time it doesn’t work again!
Conclusion:
It works very well when it works, but extremely confusing to setup for too many items to check without sufficient explanation and direction on the app!
Suggestion:
Need a help balloon for every item so user can decide to check or not (name of item may seem self-explanatory but actually not clear to the average user). Also may help if all the absolutely necessary items are made to stand-out and/or differently colored. A check list with explanation also helps.
Anyway, I really like the program when it works so hope it can be setup more easily.