If you are not receiving a federal tax refund or do not have federal taxes owed, then there is nowhere to enter your bank information since it is not needed on the federal tax return.
Use this IRS website for stimulus payment status or to update your bank account - https://www.irs.gov/coronavirus/get-my-payment
Use this IRS website for get my payment FAQ's - https://www.irs.gov/coronavirus/get-my-payment-frequently-asked-questions
I did look into that, however it doesn't work for me,
The IRS site gives me a Payment Status Not Available message for days now. I don't think they have my bank info because the last refund I received was for 2016.
I filed in 2018 (even if my earnings were below requirement for non-filers) because I had to include a Form 8938 for foreign financial assets to my 1040. If I use the Non-Filer option with the IRS tool, it will file my 1040 for 2019 for me, which I do not want because I need to include a Form 8938.