There was a problem while parsing the package

Hello. I am trying to install onto a Samsung S9 with android 9. I cannot find the the setting Unknown Sources. After downloading I immediately get “There was a problem while parsing the package”. Please advise what I must do.
Thank you.

Hey Helen,

For us (on a Pixel 2) it is under Apps & Notifications > Advanced > Special App Access. Usually, though, you should be able to turn the setting on directly from the notification that your phone doesn’t allow Unknown Sources.

Edit: I just tested it, and if you hit “Settings” on the pop-up about Unknown Sources, it should take you directly to the setting.

I’m using adclear