'Enable your browser' error message - XFinity

I can't seem to sign in to the xfinity app. When I start it up and slect 'sign in', I'm taken to an error message that says 'enable your browser'. I can go back or go to settings. However, all the browsers on my phone are enabled. I need to sign in so that I can activate my modem. Does anyone have any guidance?

This question, "'Enable your browser' error message," is about XFinity-Comcast TV Television Apps.

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