So, I had a 30 day free trial for Visual Studio 2019 which just expired. So, I logged into Microsoft web page via gmail on the same Visual studio application. I wasn't asked to enter any bank account or anything but all of a sudden I was just logged into via Visual Studio and the message popped out that my licence is successfully extended. And now I see my initials on the top of the program and it allows me to use the program. On what grounds? How could that happen? I am a bit worried now that they will send a bill to my address or something although I didn't do anything terminate. When I clicked the purchase button I expected that some window would appear and I could choose a form to buy or something... Please help me out, maybe someone now what could I done in this instance?