Still not able to use the updated Figma UI3 version
Hello there! Thank you for your interest in Figma UI3.
Due to high interest, the waitlist quickly reached capacity and all available slots are now filled. The closed betas are underway for those who gained early access.
Thus, at this time, we are not manually adding anyone to either beta (UI3 and AI), but please stay tuned as both Figma AI and UI3 are rolling out gradually over the coming months. Thanks for your patience 
For more information, please check this article: