Very Concerned - Garage Door Opened in the Middle of the night

Just so you know, I am waiting for the IQ4 345 to be released to change over from this panel

Still waiting on an ETA for this. It was supposed to be in production about a week or two ago. Which means it should be released soon.

I took all the batteries out of the keyfobs so they are no longer operational.

This is recommended if you are not using them. If the issue occurs again, any devices that are not powered on can be ruled out, I understand that this is less than desireable, Unfortuantely, given the lack of history in both ADC and at the panel, confirmation of the root cause is difficult to pinpoint.

Regarding the slowness of remote commands for z-wave I would run a z-wave network redsicovery, especially if local control is affected.