Can't record two audio anymore

So I’m having trouble recording two audios now
and I can’t record and sing along with any instrumental songs anymore
because it keeps doing this (I uploaded a photo of it)

It keeps on doing that whenever i try to record two audios
can someone help me?

In recent versions of Audacity, to record to a new track you must either:

  • Hold down the Shift key and click the record button
  • Hold down the shift key and press “R”
  • Transport menu > Recording > Record to new track