After you file

There is nothing you can do but wait for this to be completed ...  the W-2 info is sent to the SS administration and then it is forwarded to the IRS  so somewhere in the SS system your W-2 got "lost".   If your fellow employees have not had an issue then yours is an isolated incident.  I am surprised that the IRS did not request you to mail in a copy of the W-2 form yet.   Sadly the IRS is understaffed so this will probably take a long time to resolve itself.