is there any way to printout the database and the form submissions? maybe convert them in a pdf in a way?
also how do you access the database from the mobile app?
You can export database content via a CSV file as instructed here: https://support.wix.com/en/article/exporting-data-from-a-database-collection
As far as I know Wix site dashboard is not accessible via mobile and the same applies to database. However, you can address your question to support just to be sure.