I accidentally click "turn off all notifications for *" in notification center, e.g. Stretchly, and now it's not reversible.
I can't find that app in notification settings. Is it possible to modify registry to get it back? Or any other workarounds?
Edit: this is probably because app is portable.
Edit2: I solved it by editing %LOCALAPPDATA%\Microsoft\Windows\Notifications\wpndatabase.db with SQLite editor.