In the image below you can see the second bidding screen:
Id like to suggest adding some clarification text:
"Pick the race you want and bid any amount (bidding 0 is allowed)" "If someone bids higher than you, you will be allowed to overbid them" "If you choose not to overbid them you are allowed to bid on another race"
The first time I tried bidding, it wasnt clear to me if I would be allowed to over bid or if there was a maximum allowed to bid (I only saw numbers 1-8 and imagined that anyone who bid 8 would get the faction). I also imagined that you were allowed to bid on different/multiple races (which you are but only after refusing to outbid an opponent's bid). It is also specifically problematic because you cant undo and if you make a mistake, you are committed to the game.
The quoted text above just makes the bidding a bit clearer.