2d-Extras Gridbrush Not Working

Hello! I’m new to Unity and following the guide for Ruby’s Adventure. I got to the point where I had to start using a Tilemap and stuff, but the default brush, the Gridbrush, wont do anything whenever I use it. I can only set down the first tile, and even that’s done by just dragging it into the tile palette. Did I forget to install something from the package, or am I doing something completely wrong? I’m currently using Unity 2019.2.11f1, if that’s any help. Thank you for the help in advance!

Never mind, wow, I’m a clown. I just didn’t understand how the Gridbrush worked because the tutorial didn’t do a great job of explaining it. In case other people new to this see this question - you have to select the tile with the picker tool and then you can paint with it in the actual scene.

still doesn’t work.