Xfinity Overwolf Expired Certificate

According to Kaspersky Internet Security, the "Overwolf" application associated with doh.xfinity.com has an expired certificate, and represents a security threat.  An examination of the certificate shows that it was valid through 10/20/2021, and since that time, this certificate error is flagged dozens of times per day on my computer.

I don't even know why an "Overwolf" application associated with Xfinity appears on my computer.  However, a Google search of "xfinity expired certificate" will reveal Reddit posts by other Xfinity customers over the past couple of months reporting the same thing.

Can someone from Xfinity please fix this problem?  Thank you for any assistance that you can provide.