Hi John,
Thanks for reaching out.
Technically you don’t need another license as the plugin works fine without it. The only thing you’ll be lacking is automatic updates for the dev site. Everything else will work just fine.
Let me know if you still feel you need a license email me your order number (vinny [at] usestrict [dot] net) or email address so I can set it up for you.
Cheers,
Vinny
