managed to get the redirecter reverse proxy working with proxying to yunohost services as well by manually changing the line in redirect.conf
from
proxy_set_header Host $host;
to actually hardcoding the host for that particular domain, e.g.
proxy_set_header Host myservice.domain.net;
kind of awkward and not sure what is the correct way to do this, but its working 
other than not sure what other tweaks would be needed to also handle udp