WiFi Issues ... Need help =\ topic

I've searched and didn't find a thread regarding my issue.

Everyday whenever I come home from work I'm having trouble reconnecting to my WiFi at home. My Nexus 7 , Nexus 4 and ever my GF's LG G3 connects to it. My nexus 6 on the other hand never connects Automatically. I'm always given the "Authentication Error" until I reboot. Is this a known issue or is it just me?

Nexus 6 (T-Mobile)

Thank you :)