Was it prepared with Online TurboTax?
If so, log into your online account and scroll down to the section "Your Tax Returns & Documents."
Expand that section and choose tax year 2017.
What is shown for "status?" Does it say accepted, rejected, started, printed, ready to mail, or what?
We can tell you more about what to do when you report on that.
Copies of the W-2's do not have to be sent at all when efiling a return, so I'm not sure why you enclosed them with the payment voucher. Whoever processed your check and voucher may have just thrown them away since there was no return with them. W-2's only have to be sent when a return is printed and mailed, in which case the W-2's are attached to the Form 1040, as well as any 1099-R or W-2G that has withholding.
