Eversolo - Roon for Ipad does not recognize an external USB-connected DAC

Hello everyone, I have this problem. I have an external Mytek Brooklyn DAC+ connected via USB to an Eversolo streamer and a Roon server on a laptop. Everything works as it should. The only problem is that the Roon Remote for iPad doesn't recognize the DAC+, it just lists it as "USB OUT" without mentioning the Mytek Brooklyn DAC+. Eversolo himself sees and recognizes Mytek. Roon on the iPad does not. Any ideas?