The bar shows both my layouts ("Keyboard: us, latam") without coloring the current one, and now everything else on my bar is uncolored as well. According to the previous guide, I should add "output_format = i3bar" to my i3status config file but if I do that, my i3bar doesn't display the outputs, but the code of my config file.

If you're not sure which file the block is in, another method is to type [[^^ and search for blocks in all files. This will search through all the blocks in your vault, so expect a bit of delay if your vault is large.