I understand that it takes time, but no update for two months is quite long. I am not even looking for a software update. I am just genuinely interested at whats going on...
Managed to fix the problem. Go into True NAS interface from Settings in Hex. Go to 'Apps' menu, click 'Configuration' drop down button, click 'Choose Pool', select your storage pool then click 'Choose' - the app service will then start, go back to HexOS and install Immich again and all will work.