It's only saving 10 second clip

I’m new to N Track. Just trying out the demo PC version til I decide if I want to buy it or a new Reaper license. I have what may be a stupid question. Just recorded a song, but when I save it as a wav or mp3 and play it back outside N Track it’s only a 10 second clip, not the whole thing. Is that simply because I’m using the demo version or am I doing something wrong?

Yes it’s because it’s the free version, audio exporting is limited to 10 seconds.