Good news! I did mine through H & R but got the same message around end of January, even though it was “approved” a week prior. After about 2 weeks, the message just went away on its own and said “processing” and gave me a date for ETA of deposit. As of 2 days ago I’ve received my funds. No letter received, must’ve just been a glitch in the system. Hoping the same for you all. Best of luck
