I filed my 2019 tax return using TurboTax E-Delivery software but it didn't connect to my online turbotax account. How do I fix this to get a stimulus check from IRS?

You do not need to fix anything, regardless of the method you filed your 2018 or 2019 tax return, you are eligible for the stimulus check.  For more information, please view this link:  Corona Virus Stimulus Package Information