[Help: Banners don't show when uploaded? (Broken images?)]

Anyone? Please!

[Help: Banners don't show when uploaded? (Broken images?)]

Hi guys, 

Hope I'm posting in the right place and according to the forum rules

I  would appreciate help with an issue we're having with our Revive installation. It has worked well for months not, but for a couple of days the banners we try to upload appear as broken images and don't show up at all when added to a zone. We're currently linking to outside images from a URL to still use Revive, but do you know what to do?

You can see a screenshot on this link to my Dropbox !

Thank you so much!