Sold Android webview application for webpage using recaptcha v3

I want to create a simple android application where the user is shown a webpage. The webpage is http://www.indianrail.gov.in/enquiry/PNR...?locale=en. In the webpage, the user enters a PNR number (for eg: 8713017437), after that he is shown a math captcha and when he answers the math captcha, he is shown the results page.

This works perfectly when I'm browsing the webpage directly in chrome. But, when I open the same webpage in my android webview, I get an "Invalid request" error about 3 out of 10 times. The error seems to be caused by recaptcha.

I will pay $200 BTC to anyone who can build this webview app which works like chrome and always returns a valid response.