Stig, please see my answers below:
I think this confirms my suspicion.
The good news is, that whatever you have deleted, it has nothing to do with the already published extension (old versions) at https://addons.mozilla.org/firefox/addon/jawsinspect/.
The “bad news” is that you are logged in with a “wrong account”. I assume it is an account your company gave you, and maybe it has prior been used to publish some beta or test versions of the extension. But it is not the account that has posted the versions currently available on AMO (above URL). Your company need to find out how you can get access to the other account.
As far as I can see from your posted screenshots, your current account is named “Freedom Scientific”. But you need to login with the account having the name “Vispero”.
Once you are logged in with your “Vispero” account, you should be able to post new version of extension, by choosing “New version” (and next, make sure “Where to Host Version” is set to “On this site”) to update existing extension available at the old/original URL.
Thank you for all of your help Stig! Hope you had a great Thanksgiving!