You need to register both on gaming.lenovo.com/game-key-drops to get the code and on us.gamesplanet.com to use the code and get a steam key. Boring but doable…
game on steam: https://store.steampowered.com/app/1472560/I_Am_Fish/
Lenovo has different pages apparently, not sure why…
To be sure to login in the right one. Go to the link, wait 10 min to activate the giveaway then login/sing up from that page. The code can be used on gamesplanet to get a key.<<<
next game:
There seems to be different lenovo pages, help yourself with the browser and find the page “I am the fish: giveaway code” once inside use the code on gamesplanet to get the key