Understand, I would do the same
if its goint to be accessible from the webrowser, you can easely test that I guess.
open another webrowser, ie ; firefox and copy past the complete Url of that screen from browser logged in to firefox, unlogged.
than check if firefox can display the screen or returns some “restricted page” mesage, that mean the page is really restricted.
As for Google, if it’s being “scanned” by google engine * and most public pdf are.
just google the name of your pdf files and see what comes up. It shouldnt be able to find it if the Adalo File (mostly folder) restriction is set properly.
I d be interested to know about your results
*they are more Tips to *skip page scanning from “search engines” but they might need to be configured for Adalo file system structures to succeed.