Hi, I have river vials in my armory but the option to place them in rivers doesn't appear. Players I've encountered were able to place theirs and they say that once you get to the river a small box will appear on the right side of your screen or above the shop button but nothing pops up with mine. I've already uninstalled and redownloaded Dota 2 and I have no other options left. To anyone who has any solution for this I am forever grateful.