Jigoshop Drag & Drop Cart – Unable to activate

I had this plug-in enabled when I was practising building my site (I am a total novice) on my Localhost (my own computer. Only accessible by me). I have now moved my site to where it will be hosted and have attempted to install the plug-in but am getting an error message. The practise site on my computer has been deleted (I deleted it about a month ago) so there is only the one site in existence.

The licence key I am trying to instal with is the one on My Account page on Jigoshop website. The error message says it is unable to connect with the database server at localhost (this is because it has been deleted) I want it to connect with the database where the site is now hosted.

Can anyone please help?

Many thanks