Welcome to Interact, and thanks for thinking of purchasing.
I have tried the trial version and like the program but have some questions before I buy it
#1 when and why do I need to re register and if I buy thr program why do I only get 10
You only re-register if you rebuild your computer or buy a new computer. If you run out of restores, you can post here and we'll reset them.
#2 the search function for the album tracks when recording dose not appear to work on the trail version unless you do more than type in the artist and hit search
The search box at the top right of the program will search artist, album, name, genre, and any other field configured as a 'Default Search Field'. You can tell the program to search other fields by default in Options > Library & Folders > Manage Library Fields. If you're trying to do fancy searches, you might explore Smartlists.
#3 why can I not contact j river to get information about the program
JRiver staff (myself included) read and post on this forum every day. But the other users, who are often incredibly knowledgeable, are what makes this place really neat.
[edit -- I cross-posted with Jim, but I'll just leave both responses]