"Number Pattern" unable to Save

I’m testing the app and I created Number Patterns for each of the transaction docs, however, it won’t let me save them.
I assumed this was because I’m only on the free plan now so I checked the feature list of the Pro plan, but it doesn’t make any mention of Number Patterns.

Why might I not be able to Save my edited Number Patterns?


These features require a pro plan, there should be a clear indicator of this in the app.

I did notice a banner ad for Pro Plan, but it didn’t explain this was only a feature of Pro so I didn’t make that connection. I admit I’m also numb to advertising and I don’t read it so maybe it said so somewhere and I missed it, so my bad.

Thanks much.