> All of the Gowin documentation is available on their site with a free, approval-less email login
The problem is trust. I'm hesitant to hand out my e-mail anywhere because far too often I have been hounded by salespeople as a result, not to mention data breaches or bombardment of newsletters.
So just use Google to obtain the documentation? Or a fake email? The PDFs are pretty easily obtainable by title:
https://www.google.com/search?q=gowin+user+guide+filetype%3A...
https://www.google.com/search?q=gowin+primitives+filetype%3A...
https://www.google.com/search?q=gowin+gw1n+filetype%3Apdf