4. make sure the remote code in webif ir settings matches your device.Yes I did, it's on the app's page on the google playstore:
This is a remote-control app for the Humax HDR Fox-T2 digital video
recorder and for no other device. It must:
(1) have the Customized firmware
(2) the "ir" package.
(3) and be connected to the same home network as the phone/tablet.