Solving playback issues

Help with audio & video playback issues, TV display type recognition & compatibility, HDCP messages, troubleshooting playback errors, advertisements, and resolving power issues.
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Level 7

Roku Ultra 2020 issues with HDMI switcher

I have this 5-port HDMI switcher:


Based on its specifications, it appears it should work with the 2020 Roku Ultra just fine.  However, if I connect the Roku to it, all I get is a blank screen and no output.  This same 5-port switch works fine with my 2019 Roku Ultra that I have on a different television.  Is there any obvious reason why the 2020 Roku Ultra fails to work with this switch?

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