Now that I can’t help you with.
I’ve always started it manually with scripts as I don’t want it running all the time.
Looks like manual launch uses different location to add-on.
Try below from SSH.
cp /storage/.hyperion/config/hyperion.config.json /storage/.kodi/userdata/addon_data/service.hyperion.ng/config/hyperion.config.json
The .Hyperion folder should exist now and that is where the config file is when launching from SSH.
Command copies it to the place that the add-on is expecting it to be when launched that way