If you just want to try it out, they offer a trial version that lets you test the basic downloading capabilities before you buy. Are you trying to recover a lost key or are you looking for discount codes to buy a new one?
I am writing to request assistance in retrieving my license key for UniTube. I purchased the software on [Date of Purchase] license key for vidjuice unitube
where you can get a free 3-month non-commercial license by providing your email. Critical Licensing Facts If you just want to try it out,
Thanks, [Your name]