Trying to migrate ZST39 to ZWA-2; can't select serial port on HA Green

I’m trying to connect a ZWA-2 to my HA Green, replacing a Zooz ZST39 800LR Z-wave stick.

I’ve been following the steps in “Scenario 2 You have the Z-Wave JS UI app:”

First concern is in step 1. The three-dot menu does not have a “Disable” choice.

Should I be selecting “Disable” from this three dot menu instead?

If I do, then after backing up the old ZST39’s NVM and plugging in the ZWA-2, I can’t get it to connect to HA. The ZWA-2’s light is pulsing white. The last step of the screen capture below shows the step I am trying to accomplish:

and here is what I see under main menu Settings->Z-Wave:

Any ideas? Thank you!

Step 2 is in the Z-Wave JS UI control panel, not in HA.

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Thank you very much. The instructions were almost idiot-proof, but I exceeded them.