I recently went on vacation and unplugged everything in the house before I left, WiFi modem included. As soon as I came home and plugged it back in, I have had nothing but issues. I only unplugged it from the electricity, not the cable. Prior to this, I have never had a problem. It shows that I am connected to my network, however it’s not working. I have Spectrum internet (the only option I have) and the issues are not coming from a lack of connection. There are no service outages. The third light on the modem is often off, which I’m sure is the issue, however I don’t know how to fix that. My warranty is up and I can’t call Arris for help without paying a ridiculous amount of money. I can’t even connect to the app to troubleshoot from there.  

I had a refurbished Arris product that did the same thing and was resolved when I bought a new product. Is that really what I have to do? Upgrade to a newer model? 
 

Help!