Because of iOS 9's limitations, the web version might disconnect if left idle. Ensure your primary phone is nearby.
By understanding the limitations and risks of using WhatsApp on iPad 2 with iOS 9.3.5, you can make an informed decision about whether to continue using the app or explore alternative messaging options.
Ensure WhatsApp is installed and active on your primary smartphone (iPhone or Android). This phone will serve as the master device for initial verification.
I can provide specific troubleshooting steps for your chosen route. Share public link