I have a very similar issue, possibly the same one although I'm not sure - I always use a VPN but when I'm connected to a UK server, I can't see a bunch of emojis, they appear as tiny icons which if I try to enlarge them show "this image is not available in your region"... connecting to a Polish server fixes it, haven't tried every single country but I'd imagine it might be a similar problem, some of the images are hosted somewhere doing some annoying geoblocking of certain locations, for whatever reason. So if you have access to a VPN maybe try that and see if anything changes... actually I have the same thing with some of the banners and graphics in various places on the site, sorry I'm thinking now this maybe isn't the exact same issue, but maybe it's similar.