Roku se

Per this answer...https://forums.xfinity.com/t5/TV/ANSWERED-What-is-Xfinity-Stream-on-Roku-and-how-does-it-work/ta-p/2940367....it appears that my roku se does not work with XFinity, which explains why I had such trouble for 2 hours.  I had no problems with setting up the roku, and of course I also want to watch my cable xfinity programming.  Roku se does not come with phone support.  I called xfinity and they gave me the roku cust service phone nor and of course they told me I have no phone support with roku.  What are my options?    Karen