Incomplete removal

I have a concern with a program that I installed and uninstalled:

MOBAPHOTO

I cleaned with regedit what I have found
I deleted all files after a search mobaphoto files

when I right-click on the trash or on my pictures I have:
"generate a gallery with Mobaphoto"
"resize with Mobaphoto"
etc.

What can I do to completely remove all traces of program?

Note that I often work with programs installed on USB key that allows me to work on more.