Determine the value of your database
You just sold me a program that allows me to enter tons of data but no way to use that data.
Upgrade to PRO? I just bought a bloody expensive subscription. What is the matter with you? The most basic function of a database is to be able to find things and you aren't letting me do anything of the sort....
So... what does your program do other than waste about 4 hours of my time setting it up?

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Mike commented
Ok, so after looking at this program for hours, I have to wonder why the lite version is simply a black hole to put data into. The very "zero level" of a database is to filter (query) entries to find things in your data.
This just failed a deployment as even a desktop database (access, open office etc) can do more...much more and won't cost a dime.
Have you ever heard of open source? How about JDBC ODBC or dynamic reports? This can't do any of those.
Good bye, I hope your garbage program crashes and burns. You don't even have an email for assitance. Keep the subscription that I just paid. You won't see me expand this project across my concerns.