You can't use the keyboard, more than moving up/down in the menu.
I did some tests with a ps4 controller with nothing breaking, must be the ps3 then... I'll report back later this week on this issue :)
I'm now sitting with a ps3 controller, can't get it to work at all.
If you join Knockbots's discord channel we could work this out. (Post in the bugs section so we know who you are) ^^