Strange message after approval?

[spouse]

Actually, my cas has been approved on june 24th, and message changed on june24th, and also couple of emails received from USCIS on that date.. BUT today I did check the status , and the message say's "This case has been approved on,,June 28 (?)....approval notice was mailed If 14 days passed..bla..bla) and Last updated date was June 29.
I don't know what is going on here

 

[Sri4GC]

Actually, my cas has been approved on june 24th, and message changed on june24th, and also couple of emails received from USCIS on that date.. BUT today I did check the status , and the message say's "This case has been approved on,,June 28 (?)....approval notice was mailed If 14 days passed..bla..bla) and Last updated date was June 29.
I don't know what is going on here

Don't worry about that. On 24th your case has been approved but on 28th approval notice has actually been mailed. This is why 2 updates. The same thing happened to my 3rd EAD. Refrain from checking your case status for a while. Sleep well.