I was trying out the different apps I had on my iPad to see which one would be the best for voice recordings. I got to Garage Band and then got stuck with an 8 second recording which I could not change. When you see the 8 bars you don’t automatically think of clicking on that to make other choices to extend the recording . EssentialMac-UK is a very handy site for all things Apple and the clarity of instruction is just what you need when you are stuck. They have a post on how to increase the recording time. Please note that you have to do this every time you make a recording. It would be better if you could leave it on the extended recording setting. Maybe next app update?