Pipewire does not detect USB sound card found by ALSA, but it used to

I was attempting to connect to a Google Meet call on my browser (Chromium) and where it would normally have found my USB audio device (a USB dongle that I can connect a microphone and line-out/speaker on their own 3.5mm jacks) for some reason it no longer was. Going into pavucontrol and my volume control applet, and so on, did not detect the device. As mentioned, this used to work no problem, with me connecting, disconnecting, reconnecting the USB dongle at will (and where it is normally not connected, for privacy reasons).