I was told that my refund was approved on March 2, 2018 and would have a date by now. my refund on wmr says it is still processing.

WMR is straight from the IRS, so we can't give you any further information; once the IRS accepts your return it's out of TurboTax's hands. If you need more info beyond WMR, call the IRS at 1-800-829-1040.