I already added for the article payment services both images but there is no thumbnail displayed.
It because the default thumbnail image has been generated before. Everytime you add new image, please delete the images under folder
.. /images/thumbnails/mod_minifrontpagepro so the module can generate a new thumbnail.
https://www.dropbox.com/s%2Fba7s5gii9utz1wq%2Fo3hl4.jpg?raw=1