So, I am using Playfab authentication, created catalog on Playfab and synced it with Xsolla. I am using Xsolla In-game store in unreal engine.
I followed this link: ( https://developers.xsolla.com/sdk/baas-templates/use-store-with-baas-auth/#baas_templates_set_up_server_oauth )
for getting Xsolla payment token request but I am getting an error i.e "server token not recieved" I've already specified all fields in playfab cloud script.