For some reason, while connected to the Deco M5 from my laptop, I cannot connect to mail.google.com. I can connect if I use the main wireless connection, and through the M5 I can connect to google.com, calendar.google.com, help.google.com/mail, and such, but it won't connect to mail.google.com. I can't figure out why. Google dev tools are telling me the error is ERR_CONNECTION_RESET. Facebook has similar issues.
Interestingly, the Gmail and Facebook app works on my phone while connected to the same network, just not on my laptop computer.
Any idea why some sites do not work?