Transfer app when can't remove builds

Hi, we are trying to transfer app from one owner to another

when we try to initiate the transfer it says we must remove all test flight builds.

however when we go to the developer account, logged in as the admin, we are unable to find any way to delete a build. at best we can find 'expire build'. how do we delete builds in preparation for transfer app to a new owner? i attach screenshots...

thanks Prem

We are having the exact same problem!

Did someone find a way to solve this?

Transfer app when can't remove builds
 
 
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