On the EAD approval letter, it says( if there is some correction that needs to be made, please send the card back with documentation of the problem) I'm saying this now because I just got an email from USCIS.
( The status of this service request is: USCIS systems show that we received your request for your card or document correction. We are currently processing your request. You will be notified if we need additional information.
If your receipt number begins with IOE, please consider activating your USCIS online account at https://myaccount.uscis.gov. You can use your account to get your current case status and to access every notice we send you. You can also send messages and receive answers through a secure inbox.
Address Changes: If you move, please provide us with an updated address. For more information about address changes, please visit our website at www.uscis.gov/addresschange, and click on "How to Change Your Address." To ensure that all mail is delivered as addressed, please also ensure that you are registered with the U.S. Postal Service (USPS) to receive mail at the address of record you have provided to USCIS.
For questions about your application, you can use our many online tools (uscis.gov/tools) including our virtual assistant, Emma. If you are not able to find the information you need online, you can reach out to the USCIS Contact Center by visiting uscis.gov/contactcenter. The USCIS website also provides detailed information about policies and procedures, and you can download and e-file forms from the website.)