There is one more thing we could try, while you wait for a response from Support.
Download the Eventide Device Manger: https://www.eventideaudio.com/support/product/13388/installers
Connect your H9 via USB to a desktop/laptop
Open up EDM and it should detect your pedal. Take note of the serial number there, just in case. Select it, then go to Firmware updates on the left. Choose the top option 5.8.5[1] and install it.
Try pairing with the pedal again.
