Esteemed Senior Member
This morning I had the idea to try the brush set in Affinity Photo and after doing that I was able to establish that the set I purchased contains the full set of Artistic and Texture brushes. What is missing appears to be what Jessica calls the Aligned brushes so maybe they are not compatible with PSE or Affinity for that matter.
I will post whatever reply I get.
Apologies to everyone. I didn’t mean for this to turn into a saga...