Hey Dust,
It is something that my colleagues are looking into and is something the Server Status Page notification was vaguely referring to. In the meantime, if you purchased it and re-logged, you should be able to find it all the way at the bottom of the Wards Collection page when looking through the "My Collection" selection:
https://imgur.com/Swg3unO
In Champ Select, similarly, you can locate the Pumpkin Cat Ward Skin all the way at the bottom of the list:
https://imgur.com/K4RCehC
Since you crafted it twice, please create a Support Ticket so my colleagues can assist you with refunding the duplicate: https://support.riotgames.com/hc/en-us/requests/new