Unable to post for sale ad for music

Been a while since I bought an ad here, and things have changed quite a bit.

I'm able to enter all specs, photos, info on pages 1 & 2, but at bottom of page 3, there's an 'Add to cart' button under 'Pay Later,' bet it's grayed out / can't submit.

Any idea what I'm doing wrong?
’gon support got it settled.

Apparently, if there’s a link in description it doesn’t work unless they approve it.

And in case you're interested, I'm selling my SACD collection: 28 albums / 30 discs.