I had this problem often in the past, here is an actual example using NOF10:
I created a
OG WhatsApp template for a client. The client opened the template correctly and uploaded the homepage. All class background graphics had disappeared. The classes with all settings remained intact, so we could simply replace the background grafics within class settings . Does anyone have an idea why this happens and what one could do to make sure backgound pictures are better linked?
Thanks and have a good day!