How can I fix the 'link' metafield on my product page?

I need help on metafields.

I have a multicolumn on my product page. For each column you can have a picture, heading etc. But for each of these fields one can create a metafield. All of them are pretty straight forward, but I cant seem to get the one for the “link” to work. Any sugestions.

Are you able to show what you’ve done so we can have a better idea what could be wrong?