Why am I not able to see the previously activated UPI ID(s)?

Your PhonePe account has been updated to a version with a better experience through an app upgrade activity. We’ve conducted this activity to enable an option for you to create dedicated UPI ID(s) for each bank account you’ve linked on PhonePe. Previously created VPA might not be active. You may activate it again on your app.

Related question(s):
How do I activate a UPI ID for my bank account?