Mask Does Not Work

Upon using the app with Mac Photos App, I am unable to create mask. All the support documentation that I was able to find refers to the stand alone version. I am able to create decent HDR type images but with limited options because of the non-functioning mask option. I would give 5 stars if all the featurs worked through the Photos APP extenstion.

WeatherlyWonders about HighDR Photos Extension, v1.0.5