How do I open a support ticket?

The page is on my ISP.

https://www.newsletterbroadcast.net/

The page works fine on Verizon, but generates an error on Xfinity.

C:\>tracert https://www.newsletterbroadcast.net/
Unable to resolve target system name https://www.newsletterbroadcast.net/.

Hostway is trying to reach out to Comcast directly. We've been working this problem for a week.

Because of these problems and general performance issues, I am moving my business to Starlink. 

Thank you @user_s5xcsr for providing those additional details, @user_s5xcsr . I can certainly understand how frustrating this has been, especially after working with the hosting provider for a week. I do see one issue with the test that was run: tracert https://www.newsletterbroadcast.net/  The tracert command cannot resolve a full URL that includes https://, which is why it returned: Unable to resolve target system name. Instead, the test would need to be run against the hostname only: tracert newsletterbroadcast.net or tracert www.newsletterbroadcast.net. Since the website works when accessed through Verizon but not through Xfinity, and Hostway is already attempting to work directly with Comcast, this does sound more like a network routing, DNS, or traffic filtering issue than a problem with the website itself. That information would help determine whether the issue is related to DNS resolution, routing, or something occurring between the hosting provider and the Xfinity network.