I had to look up what the HDCP error means, it's a form of digital copy protection.

The first is that every time I want to use it, it gives me an HDCP error.

I will continue to monitor the connectivity issues if this stick, if they subside and it becomes reliable I will repost, I have had the 4k stick lose signal once and a hdcp error once, otherwise I am content with Roku, I also have Apple 3rd gen and Apple 4ktv, but mainly bought the Roku for the Xfinity

Still getting HDCP errors after following numerous troubleshooting steps.

So long as I turn the TV on before I plug it back in, this strategy also fixes the HDCP error