There are some changes during the period from 2003 till 2019.
First what you can do is to run the database with the acces runtime edition.
If it does not run good you can try to convert the database to the newer or newest version off Access. For converting you do need a full version from the Access software or you can let it be done by a developer.
If you have a version of the database what is not encrypted / compiled it can be "updated" by a developer for you.
For exact analyses it needs the database to give a real answer.