My stupid thing just wont add.... are you sure the username is the one we use for webmess.. the one we put in for the username
It should be the one for webmess... I thought about the problem you're experiencing and perhaps it is one of the two possibilities:
1. You forgot to remove the "[ ]"'s...
OR
2. Maybe it is Cap sensitive (eg. Nova or nova)...
Try either one of them and see if it works.
Oh and btw, it might not look like it has been added when you input the code and change the URL's... However, if you click preview, it'll be shown... however when you add the code in the customize menu area, the code REMAINS there, try clicking preview.
Hope I helped

& Good luck!