I can't update my profile photos.

I'm Kevin Yeonsu Kim and I want to change my profile photo that I perforemed recently.
I changed my profile photo to these photos that I included on all of my social media accounts.
But I can't change my profile photo on musescore.
Being not able on my phone, I tried many times on my computer, but It doesn't work.
Though I changed browsers, It still doesn't work. When I browse the file, There is no response.
What's the problem? How Can I solve the problem?
Please give me an answer that really help this problem .