Recordings stopped

I use Audacity for rec musical tracks with my mic Behringer C-1 connected to my audio card Audiobox USB by PreSonus. Until now I’ve never had problems with recording, I connected my classical earphones into my pc’s exit and I could only hear the instrumental track without hearing my voice on it, but when I bought record headphones to be connected at my audiocard to directly hear my mic into the headphones on the track, Audacity started to stop the record and I can’t get the reason why. If I try to unconnect my headphones by the audio box and set again the audio exit in the standard mode of my pc, it all starts again to work. How can I fix this?

Make sure you’ve selected your USB interface as your [u]Recording Device[/u] and DO NOT select “Loopback”, “Stereo Mix”, or “What-U-Hear”.

It did not work