Once the tax return has been e-filed the method of receiving a tax refund cannot be changed.
It says that It can as long as its not accepted yet, And it is not also don't' know where it is being mailed t.
@tum5egfp4 If you haven't mailed your return yet you can try to switch to efile.
https://ttlc.intuit.com/community/e-file/help/how-do-i-change-from-mail-to-e-file-in-turbotax-online/00/26985
It's easy. Simply finish your tax return, select File in the left menu, and follow the instructions until you can select the Transmit my returns now button.