Update of my SSA visit today.. I went to a different SSA office today, and for real the staff had no idea about the extension letter. She said your GC is expired, nothing we can do to remove your work restriction on the current SS card until you get the physical update GC in hand. I told her, this is why I am bringing the extension letter (48 months), she was saying our system only accept the physical GC. In the end, I showed her the printed paper of step by step SOP from their website for accepting expired GC + extension letter. I got the link from VJ (sorry, I couldn’t find the link here from my phone). But, I am so grateful for VJ, it’s super helpful! She looked into the printed paper (I highlighted the information), she said this is the 1st I handle this, and good thing you got these papers printed LOL, she sighed and made copies of my documents. It works, she said I should be receiving the unrestricted card in the next two weeks! Thank you so much VJ family!!