Why cannot all the (Logo) Icons that can be edited /placed on on a field/block be seen on the iPhone? Specifically, why can't the Soundcloud icon or the youtube icon be seen on the iPhone? I can see them on the block field when chosen on my laptop or desktop, but they do not show up on my iPhone. Other choices can be seen, e.g. gears, music, etc... but the soundcloud and youtube icon do not showup? Anyone know why? Also, the Spotify icon does not load on iPhones either, the other icons do. The soundcloud icon is attached.

NOTE: NOT SURE WHY... but icons are showing up on my ipad, and other phones when I check, but not on my phone. So it appears NOT to be a problem with conctrete, nonetheless, I still cannot see these icons on "my" iphone. Who knows...