Re: Photon +: "Error 721: The remote computer did not respond"
The error which you have stated i think this error is not related to the modem which you are using it with your computer, there is some problem with the configuration, and the error it simply means that it was unable to connect to the internet. I think you need to check out with the login information which should be filled correct when it ask to login for making any connection. So please check with the login information which you provide during the login.
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