Checked with viglink on my test site it worked ok. Did you check to see if the viglink code was inserted at all under view source? And are you using a different template other than the default.This doesn't seem to work for me.
I put in the API key(taken from the code)
Then I put in the whole javascript code where it goes. When I click save, it saved, no error. However when I check with VigLink to see it was installed successfully, it says not detected. I ended up putting it in my template. However i'd rather have it working in this mod so that it works on all styles.