Hello! I'm here to help you with the issue regarding the interactive breathing feature being locked in the Wim Hof Method app. Let's get to the bottom of this together!

First, could you let me know if you've received any error messages while trying to access the interactive breathing feature? Additionally, sometimes account verification or subscription recognition issues can play a part in this. Can you confirm that your subscription is showing as active in your account settings?

In the meantime, here are a few steps you could try:

1. Check App Version: Make sure that your Wim Hof Method app is updated to the latest version. You can check for updates in the Microsoft Store.

2. Account Confirmation: Log into your account on a different device or the web version to see if your subscription appears correctly there.

3. Notification Settings: Sometimes, allowing notifications can help with app functionalities. You an check your settings to ensure notifications are enabled.

If these steps don't resolve the issue, I can look into more advanced troubleshooting. Let me know what you find, and we’ll go from there!