Hello friend, look, I’ll explain step by step what worked for me with two games in a row:
1st: Uninstall the app (clear data and cache).
2nd: Download the mod (Platinmods).
3rd: Go to Settings, find the Play Store app, and clear its cache.
4th: Open AppBrain, go to the app download button (which redirects you to Play Store), tap download, and cancel it when the download reaches around 70%. After that, cancel it.
5th: Install the mod (previously downloaded from Platinmods).
6th: Open the mod. If you don’t notice that you are seeing the NSFW app version, go into the app menu, clear cache and data, then open the app again (repeat clearing data and cache until you see the NSFW content).
This worked for me with the game Blockbar and also with Good Star - Sorting Puzzle.