Installing flathub

When i install flathub

flatpak remote-add --if-not-exists flathub

But when i try to install tidal (unverified app)

flatpak install flathub com.mastermindzh.tidal-hifi

I get this error

Looking for matches…
error: Nothing matches com.mastermindzh.tidal-hifi in remote flathub

It works with verified apps
What can I do to fix this?

does it work if you download it from here?

What system are you using? Tidal Hi-Fi is only available for x86_64 cpus (AMD & Intel) and not for aarch64 (ARM, e.g. many Chromebooks).