S7 WIFI STILL not connecting at home

[AC Question]

Hi, this is my second Verizon S7 and it is still not connecting to my home WIFI. My S3, S4 & S5 all connect just fine. I've tried the following:

-Received the latest update: G935VVRU2APB5
-Forgot my WIFI setting then re-connected
-Restarted both my modem and router
-Turned off Blue Tooth
-Turned off Smart network switch
-Wiped cache partition
-Factory Reset
-Exchanged phone

Two days ago, it just all of a sudden connected and was blazing fast. Yesterday it just stopped again and won't connect at all. Before I get an iPhone, can someone point me in the right direction on how to get this fixed?

Thank you