Just upgraded to pro

I've been using the Photo Journal free version for a couple years.  I just purchased pro.  The confirmation page gave me a link to my invoice pdf.  That's it.  No email.  No instructions on what to do next.  Feel like I've just been left hanging. SO, what do I do now that I've purchased pro?   I don't want to try to figure out this myself, but I don't want to mess up my website.  I like step by step instructions when I purchase something. Mares