I bought it on launch day. Still didn't get my rewards i'm on the 4th one, and nothing, nada, niet. Kinda frustrating.
One of the 170mb patches sorted it for me. Yesterday I think, I missed levels 1-9, but got level 10 yesterday and the reward worked.
I think u/NoplantsDance a RIOT mentioned the fix was soon to drop RE getting new drops but getting your 'missed' drops would take longer for them to fix
Yep we got Korea & Asia/Pacific/Oce resolved late yesterday. Next up EU & NA.