Lutron dimmer and Moes Relay for under cabinet lights

I have under cabinet lights on a Lutron dimmer. I want to continue to be able to use the physical switch like normal, while also having some smart automations. I thought installing a Moes dimmer relay would get me there, but I’m having trouble…

I wired up the relay. I was able to pair it into HA. Here is what is happening:

When the physical switch is OFF - I can control it in HA exactly as expected. Yes!
When the physical switch is ON - The light just goes from 0% to 100% and back over about 3 seconds on a continuous loop. I can’t get it to stop. :frowning:

What am I missing? Can I even get to my goal with this hardware? I’ve wired and paired other on/off relays successfully before, but this is my first time working with a dimmer relay and switch.

Thanks everyone!

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