My son is off to college and now can't get his vault on his computer… I've given him access - he tries to sign in and then gets the "no response code from server". Got this to make life easier… so far it's been the exact opposite.
I'm sorry to hear about the trouble here. I can see how that would be frustrating especially with your son being away and being unable to troubleshoot with him directly. "No response code from server" generally indicates some sort of connectivity issue... is he able to open https://1password.com in a web browser?
I would suggest restarting the device and seeing if that resolves the issue. If it does not, please let us know.