First, the probability is that you are not able to delete the “wrong” picture is that it is in use by eMC.
I suggest that you close eMC and try again.
Also to ensure that your chosen Logo is displayed accurately in all locations is to register your Logo with: www.gravatar.com
It is a Free service, go online and follow the instructions, it will possibly take a few days to be enabled.
¡Los mejores deseos desde Valencia y mantente a salvo!
The picture is my own.
Accidentally selected it the first time.
That must be stored somewhere.
Also, the “cache” folder in the directory: “C:\Users\XXXXXXX\AppData\Local\eM Client” delete.