Hello. 

Note, UNA licensing mechanism wasn't created by AQB Soft ;)

But as I know if you want to test updates before go live you may install your test version in subfolder on the same domain. It will allow your test site to use the same license as live one.

From the other hand you may manually upload update scripts via FTP in modules/[vendor]/[module]/updates/ folder and then apply them via Studio -> Apps Market.