Hi there! I understand you're encountering an error with Google Pay when trying to subscribe through the JoyMeet app on your Android device. Let's get this sorted out together.

To start, could you please tell me what error message exactly you’re seeing when the subscription attempt fails? Also, have you been able to successfully make payments through Google Pay on other apps or services before?

While you answer, I’ll guide you through some common fixes that typically resolve such issues:

1. Check Your Google Account:
Make sure you're signed in to the Google Play Store with the same Google account linked to your Google Pay. Sometimes being logged into multiple accounts can cause conflicts.

2. Verify Payment Method:
Open your Google Pay app and confirm your payment method (credit/debit card, bank account) is up to date and valid. Also, ensure there are sufficient funds or credit.

3. Clear Cache and Data of Google Play Store:
- Go to Settings > Apps > Google Play Store
- Tap on Storage and then Clear Cache and Clear Data
This can remove any corrupt data affecting purchases.

4. Restart Your Device:
A simple reboot can refresh system settings and connections.

5. Update Google Play Store & JoyMeet App:
Ensure both have the latest versions installed. Outdated apps can sometimes cause purchase problems.

If you’ve tried these steps already, please let me know which ones, so we can explore deeper possibilities like subscription status, account restrictions, or potential server-side issues.

Would you like me to walk you through any of these steps in detail?