The Teac NT-505 needs to be hard wired to your internet to stream best. I believe you can do Blu Tooth through an IPhone or similar device, but the quality won’t be the same.
I am no expert on this machine, but what I did was get a router extender and then ran an Ethernet cord from the Teac to the extender. I then set the Teac for NET and it found my network.
Then on the settings in the app, I found the Qobuz setting to log in. I logged in and all was good.