Hey, do not worry. Sometimes the Google Pay may not work well in your country or just does not work on your device, which causes the payment to fail.
If this happens, please use "PayPal" to make your payment instead, or make your payment on our website: https://cadreader.glodon.com/payment/vip
The VIP account can be used on all platforms, which means once you are our VIP member, you can use the account both on your mobile phones and computers, regardless of where you purchase it.
If there are further questions, feel free to contact our service team at cadreaderservice@gmail.com