join testflight

I installed testflight for the beta version for IOS but need a link via mail. Where can I register for that

See here in first post.

where can i find a code for testflight

Just click on the link. It should install testflight, then in testflight you should see the Kurviger app.

Perhaps the code you search for is in the URL? Never needed any code.

You need to click the link twice. The first link click only installs testflight. I don’t know why Apple hasn’t implemented it that testflight remembers which app you wanted to install.