Ubisoft is aware of the issue and is looking into it. So hopefully this will be fixed within the next hour or so.
https://mobile.twitter.com/ForHonorG...23495092264960
I tried to buy the kyoshin in-app with the ubisoft overlay but it says that it's not available in my country, then i got on the store to check and it's there but avoided to buy it in case something bad might happen. Out of curiosity i checked the section where there are warmonger and gryphon's packs nad kyoshin isn't there.