I would recommend a reboot or possibly reset of your router. They dont always play nice and i have replaced a few for flaky behavior. In one instance everything on my network was connecting fine except one day my Denon receiver which would not connect to internet radio . Then by chance i used my phone on the network and it was acting stupid as well, in the end i did a reset of the router and all was good.

DOG is GOD spelled backwards.
What others think of me is none of my business.
M80 V3 MY GLOSS Cherry