Making your W-2 available to you online is not the same as partnering with TurboTax to allow W-2s to be imported. It sounds like your employer, or your employer's payroll service, is not a TurboTax import partner. The list of import partners is at the following link.
TurboTax Import Partners
In any case, it only takes a couple of minutes to enter a W-2 manually. Entering it manually will be a lot faster and easier than trying to make the import work.
