Problem with OpenHAB + Grafana behind nginx on another computer

Thanks, this works, even with the nginx server sitting on a different machine than openHAB and Grafana.
The only thing that does not work now is the Android app, which, according to the openHAB documentation needs absolute path in the Webview link, while I am using relative path (…/static) to avoid the complaints about http link from within https document.
Does it work for you?
(I guess I could use the domain name already in the Webview, if I get a proper ssl certificate for openHAB?)