devtrackers.gg
There was a 3 day booster and a 7 day booster in the ubisoft rewards page but when i have finally thought of claiming it nothing is there even no elephant skin 
Hey there!
You will find that some rewards from the Club are unavailable in-game while we prepare to change the Club and Uplay PC into Ubisoft Connect on the 27th October.
You can read more on Ubisoft Connect here; https://support.ubisoft.com/en-gb/faqs/000059254
Sorry for any inconvenience!