I am still coming across this problem without a way around it. It is affecting my existing pieces which I cannot just delete and start over. It is easy to test and confirm. Create a new Song and select any guitar. The new song automatically opens in notation + tab. Enter a few notes. Under settings,...

I agree. The help files for Progression for iPad are severely lacking in content. If I paid for an app with such complex functionality, I expect sufficient documentation.

I noticed this as I started a new piece - the notation was an octave lower than expected. I couldn't figure out how to change it, and since I had just started, I deleted it and started a new one. The new piece showed the notation correctly. Bizarre.