Go into your Settings..Apps..System Apps..and look for Android System Webview. Make sure it is running and updated.
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If XCIPTV won’t open for you you may have to delete and reinstall anyways. If you have had it open in the past (to add favorites) then something had to have changed in the meantime. If updating the app caused it..then you may have to reinstall. If the Web services aren’t working your device can’t connect to the web. Are you having issues with any other app besides XCIPTV? If not..then it must be the XCIPTV app itself. If you are having issues with other apps and getting the same pop ups, then it’s your Web Services that’s causing it.