The remote system sees AppleTV’s as iTunes to be controlled… but then you cannot pair them because there is no way to make AppleTV perform the pairing
Why can you not just co-opt the Apple Remote app and call upon it as needed?
The recent Apple TV update last week does cause Apple TV to misidentify itself as iTunes. We will ignore that in the next release of Roomie. Meanwhile, nothing has actually changed and instructions for iTunes remain the same: