Send me all your logins and passwords and I'll see what (damage) I can do.
More seriously, run through the usual checks to isolate the root issue:
Try multiple devices (PC, tablet, phone) on the wifi in the house.
- - determine if it is wifi router vs a specific device
IF the problem exists only on one device = Try multiple browsers on that device on the wifi in the house.
- - determine if it is a browser issue
IF the problem is only on one device with one browser = we can fix the settings in that browser
IF the problem is only on one device with all browsers = we can fix the device settings
IF the problem is on multiple devices = we can fix the router settings
Try multiple web sites, not just GCMB, as that will also indicate what kind of problem it is. If you know ip addresses for some of those sites try going to the site name VS going to the ip address and see if the same result occurs.