Something strange happened. I’ve updated/rebooted via HACS a few times over the past several weeks. Earlier today I checked and there were no updates available in HACS. Just now an update from 26.0 to 27.1 was available. Updating and rebooting has partially fixed my issues. The asusrouter services are now listed in Developer Tools.
Removing the device internet block works in Node Red as it has in the past. However, I now get an error when trying to block internet access via Node Red. Here is the JSON and error I get when I do the call service “device_internet_access”.