texture pack suddenly won't work on realms anymore

I'm running a realms and using the Minecraft horse texture pack and it's worked fine for the past few months  but about a week ago after the texture pack updated it won't work even if it shows as downloaded and loaded into realms it only shows as the basic Minecraft texture pack iv tried rebooting iv tried redownloading and yes if tried doing a full system reset and nothing works so it's not on my end that the issue is coming from if need be I can prove it isn't working via pictures but I just need it to work again because the whole realm I'm working on rests on the texture pack

Thanks, a confused and tired Minecraft player