Why is the sign up button is not working?

MIT App Inventor Help
1

Hello, I'm new to MIT, and I tried this YouTube tutorial, but it doesn't seem to work. Please assist me in fixing the issue. I got stuck for a long time. Thanks :smiley:

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2

What tutorial?

3

https://youtu.be/Cmy0VueB1zc?si=QFgmQo2BfFiqlIOf this one

4

And what does not work? Did you just download the aia from the obsidian website?