Took the upgrade to Marshmallow on my Droid Turbo2 about a week ago. Since the upgrade, the Call Block feature no longer works. Instead, it allows the call to go through, the phone rings for 5 seconds and then it goes to voice mail. 
Will need to find another app to use till this gets fixed. Tried re-installing the Avast app., deleting blocked number and adding it again - same result.
What AMS version are you using ?
Version 5.0.18
Seems to me avast have to take a look at it.
I suggest to submit a ticket.
Hey, I consulted it with a colleague of mine and he would really appreciate it, if you could contact him on android@avast.com or submitted a ticket on support.avast.com, as he would really like to have a look at such issue. Thanks!
If you submitted a ticket, please mention the number here so Thereza can forward it to her colleague.
Same problem with kitkat + ams 5.0.18 on galaxy iii neo.
Does anyone solved the issue?
In the previous ams release it was possible set days and hours of blocking. In the last release I can’t find this option. Is it disappeared?
Thanks
RDB
The Verizon Droid Turbo 2 has only 1 (ONE) sim card.