Sorry to hear that you are still having issues. It would be best to completely rule out the aggregate device, it looks like your last test was still using the aggregate device when the issue happened.
Can you try following the instructions for using the H9000 as a USB audio device and then simply playback audio from your computer without using a DAW? It’d be useful to know if the USB audio dropped out while not using an aggregate device or Logic.
You can also contact support@eventide.com and I can help you troubleshoot this further there.
