Windows 7, Audacity Audacity 2.3.0, How do I merge audio tracks?

Sometimes when I make a new track and hit record with multiple tracks, it gives a really weird error about them not matching up and I have to close and relaunch to do anything.

Also, is it possible to collapse multiple tracks together?

Is this about the same problem as this:

You can mix multiple tracks together to make them into one track. See: “Mix and Render” on this page: Tracks Menu: Mix - Audacity Manual
Once the tracks are mixed, you can’t “explode” the mixed track back into the original multiple tracks.

thank you

I’ll screenshot the error if it happens again, these are my settings though.

It is a different error than the one you’ve linked me to.