Paytm worst app for windows phone. Review on Paytm

I've been using paytm application from the last 3 year In android mobile, I never face any kind of problem with that only one problem I was seen at that time that is when we trying to transfer the money to any other account paytm charged Rs.50 or sometime its failed, that is absolutely worst thing I had ever seen. Some months before I was lost my HTC desire phone and then I purchased windows phone lumia 640xl. And I never expect that the paytm application is not working on it even when we try to open the application its automatically restart again and again, then I did factory reset of my phone because now a day paytm is just like an atm for us. But after factory reset finally paytm is working I m very happy with that I was just like wow, I added thousand rupees in that, but one day when I went to some restaurant with my GF and I was trying to pay by paytm I just trying to scan the bar code paytm again restart then I was trying to mention the number for payment but I was just type the number and every single digit was putting after 1 minute and 2 minute so I took 20 to mention the number for payment and GF said dont worry I can pay, I was feeling very embarrassing. And one more thing the payment was failed also even in my wallet I already credited 1000 rupees. Seriously worst application for windows phone and this application is not working even other windows device also I already tried if you want then please check it out once. Thank you