Dear, it can be uploaded successfully after the test. Please follow my steps step by step! Log in to the email address, enter "Settings-Email-Account Settings-Email Signature", select your electronic business card, click Edit, click the picture on the top left in the pop-up business card editing box, and upload a new picture, as shown below. If clicking on the picture doesn't respond, I suggest you clear the browser cache or try again in another browser. I hope I can help you!