Maybe you can get them to accept an "updated" version instead of the zip file, that way you can just send the latest version and you bypass the zip file.
Hi there, I could do that but then I would have to re-create the config files which contain the environment-specific information.
Really the only option is to simply unlock the zip file and the Web App will be instantly up and running.
However those people have lost their court case and now they are trying to make the things worse for me.
Right, wouldn't work then. Maybe you could set up a meeting with them, you and a notary, they bring the zip, you bring the password, you key it in, they extract it. That way, you also have official confirmation that it was all in fact done.
Just spouting ideas here, I am not a lawyer, this is not legal advice.