Hi @ishygddt_xyz, you should be getting an email with a link to the download URL for your extension.
In the meantime, go ahead and click on the name of your extension. On the next page, you should see a link on the left side bar for “Upload new version | View all.” Click view all and that should tale you to the page where you can download the signed .xpi file.
Did you ever get the email from AMO after your extension was signed?
Yes, I did—
The link in my e-mail, as well as the UI elements you directed me to, both yield the following page…
That was partly why I was so confused: the UI seemed to me as if I were awaiting a signing, but I arrived at it from an email notifying me it had been signed.