Thanks for reporting this, @hiljaaa. Is this happening for you on vercel.com/new or on a different page?
As a workaround, you can modify Vercel integration permissions directly from you GitHub. In GitHub account settings, go to Applications, then click the Configure next to the Vercel GitHub app. From there you can modify repository access as needed.
Thanks for waiting. We haven’t been able to replicate the issue, but I do have some extra info and ideas to share.
You were on the right track checking adblockers, VPN, and multiple browsers. The engineering team confirmed that this popup happens entirely on the client side, and it’s the result of something blocking the git integration popup. We don’t have details in server logs as a result, but you may have more info in the browser dev tools or as a blocked popup warning.
If this is still happening for you, please share a video screen recording. Seeing the steps leading to and including the error message would give us more clues about what’s going wrong. If you see any warnings or errors in the dev tools console or network tab, that would also be helpful to see.