How old is your iPad or iPhone? I use the Oppo media control app on my iPad for controlling my 105D- not the greatest app but the remote control page works as good as it ever did.
If you have the MSB UMT and judging by the manual, it looks like your transport supports DLNA / UPnP. You can use mConnect Player HD - link - to stream Tidal from your iOS device to the transport. Just select your transport from the list after you tap on the ’Play to’ button.