This is how I’ve always done it and it always works, any help?
Is the file 96 pixels by 96 pixels large?
If not then resize it to that size and it will work!
Mine is 96x96 as well, also named correctly in my config and still not loading correctly.
Your icon .png seems to be too large (182 kB), this needs to be 100 kB at most.
It seems the file contains a lot of random Adobe Photoshop metadata.