Change Sharepoint Icon

Question

So I am using SharePoint 2013, and am trying to change the icon for my SharePoint. If I look at it from Office 365, the link to reach it has the icon want:

However, the second I follow the link to go to my SharePoint, I end up with this icon instead:

I have tried the solution from here but unfortunately, the look and feel portion of my site won't let me change the icon in any way.

I have changed the siteIcon.jpg file using SharePoint Editor 2013, but that only changed the first Icon, not the Icon you see when you're actually using the website.

What else can I do?

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EDIT: I found the problem. They System will reset the Icon every time I log out. Here is the version history:

The System account versions are all the ugly TE, while the ones I put up are all the correct icon...

How can I make the System stop screwing up my icon?

Answer 1

Here are steps I have followed.

1. Go to the SiteAssets library.
2. You will find a __siteIcon__.jpg file.
3. Replace your logo with the same name.
4. Clear cache it does affect. I had the same problem when I updated a logo but (CTRL + F5) get this affected immediately.