To avoid common bugs and crashes, you should download the latest versions directly from the Official JoiPlay Patreon rather than the outdated Play Store versions.
Running Unity games involves a few more steps than typical mobile apps because you are essentially "pointing" JoiPlay to a PC folder. unity+plugin+for+joiplay+work
These are optional but recommended for full compatibility with multi-engine titles. To avoid common bugs and crashes, you should
Download the latest Patreon-release APK. To avoid common bugs and crashes