Howdy,
this guide will be updated as necessary, but the instructions are still valid: https://theshow.com/your-guide-to-sign-in-to-the-mlb-the-show-companion-app
The app's authentication system integrates with various third-party platforms, each with its unique requirements and behaviors. This means your session is managed by these external systems, and we access your information as needed. It's important to note that logging out of the app does not automatically log you out from these third-party services. To fully disconnect, you may need to use the "Are you experiencing login issues?" link. This tool is crucial for clearing credentials effectively, a practice I rely on frequently to switch between accounts.
We've rigorously tested the app with PSN, Xbox, and Nintendo Switch accounts and are confident in its functioning logic. However, due to the complexity of the setup, there might be exceptions. We encourage you to follow the guide closely and reach out with any feedback or issues you encounter. Your insights are invaluable to us and help improve the experience for everyone.
Thank you for being a part of our community!
Together, we can make the MLB The Show Companion App better for all.