If I wanted to change it, add something after I generate does it mean I have to pay another $20 or does it allow multiple generations after buying? I tried finding the answer in FAQ but couldn't.
There's currently no way to edit your pdf after purchasing. However if you want any adjustments, just reply to the email with your planner attached, and I'm happy to make modifications and re-send. I've gotten a lot of great customer feedback and ideas this way!