There's a bug effecting the new player experience!!!!

As a new player i am thankful that you have created the daily rewards where after we complete a match we get to choose 1 out of 3 given champions for each class/role. But on the day 2 reward, where we get to decide between Illaoi, Riven and Garen there's a bug making it impossible to select one. The bug is as follows.

The only way to get the select option is to move the cursor to the bottom of the champion portrait. Then the select option appears but when i move the cursor up to press on select the option disappears, so i move the cursor down again and it appears but as soon as i move it close to the middle of the portrait the option disappears. You also cant escape this, since i cant select i cant get back to the game and play.

Note: I've also tried uninstalling and reinstalling the game, restarting my computer etc.

PLEASE CHECK INTO THIS!!!!!!!!!