I need to make a working donate button for my app..
I have a code that only opens your default android browser with the PayPal URL.
When I open a PayPal url like this: https://www.paypal.com/de/cgi-bin/webscr?cmd=_flow&SESSION=J-KMkOXi3P5pwTbuZYELHU8QdzVJGUhGoyIL1DNb8LjuUI71OLDo5u094tG&dispatch=5885d80a13c0db1f8e263663d3faee8d5c97cbf3d75cb63effe5661cdf3adb6d, Then the page tells me a message about something.. but why?
So how can I make a paypal donate button work on android?