I have tried this method a few times and I am still not getting a clickable link when I try to add it to the feature-row.liquid in the Minimal theme. The link picker seems to work and I've assigned it to the same collection as the rest of the links, but the image still is not clickable. Can you tell if there is something I'm missing? https://carladelacruzjewelry.com/
Hmm... I'm not entirely sure why it's not working although I haven't tried my code on Minimal theme just yet. I know this isn't an answer in itself but I will try to test it out sometime and will try to get back to you when I can. Been rather swamped lately unfortunately.
If you've already found a solution then fantastic! Otherwise, I'll get back to this soon.