It is very easy to add or change your logo. Here's how:
1. Navigate to your Account Settings by clicking the triangle in the top right.
2. Click the Branding tab.
3. Click 'Upload Logo' if you need to add a new one.
4. Or click the 'Replace Logo' button to re-upload a new one.
5. Now you can upload a new logo by dragging and dropping the new one into the drag and drop zone or by clicking the Upload icon to open your File Manager.