If you filed an amended return Form 1040X, be sure you are using the correct IRS refund tool (see link below) and have waited long enough for it to show up there. It's different than the tool used for the original return, and it takes longer to show up. The info after an amended return should show up in the tool below around 3 weeks after submission.
NOTE: As you'll see at the page below, it can take 8-12 weeks (or frequently longer up to 16 weeks) to receive a refund from an amended return.
IRS Tool: Where's my amended return?
https://www.irs.gov/filing/wheres-my-amended-return
