Filed and accepted by IRS on 3/17 2021. WMR says still processing and refund date will be provided when available. Transcript says "No return filed" What's going on?

Please be aware, the IRS is currently taking longer to process returns. Your return is still being processed. Please keep checking the IRS Where's My Refund? site. 

Please see What if my IRS refund is taking longer than 21 days? for information what to do and why it might take longer.

Thank you.  Will wait for more info before calling...