Having the same issue.
Sent the survey link arcgis-survey123://?itemID=43c3bc81fad9406e8945ee58b2470cb3 via email to android phone. Survey123 App is installed. Instead of opening the app when link is selected, it tries to open in the browser I think? I get the 'This site can't be reached' error stating that the server DNS could not be found.
Any help is appreciated.