creative scrap paper brick

I am trying to make paper that looks like brick but I am still having problems with flood fill.  I tried with the flood mode at none, color, RGB & opacity.  It didn’t matter.

So, I tried this tutorial on my other computer.  The flood fill tool seems to work on this computer which is a Surface Book 2.  Since the software was installed partly on my One Drive, I needed to use the Effects Browser to find the Brush Strokes and since our internet is so slow this took about 1 1/2 hours.  Here is my paper.

Now how do I find out what is wrong with the flood fill tool on my desktop?

brickwall-paper-600 flood-fill-for-brick-paper