Duplicate add-on ID found error

When I attempt to upload my extension I get an error duplicate add-on ID found. This extension is not listed in the Firefox store. I suspect that this is an error when I attempted to sign and at failed. Is it possible to get support to determine if I do actually need to create a new id. I would prefer to use the existing one.
{65e777c7-c454-42cf-b567-860c76f29cc2}
Thanks

I see an add-on with that ID on the site, but I’m not sure if you’re the uploader. Please email amo-admins AT mozilla DOT org with the add-on ID and name so we can figure it out.