Your refund goes the 3rd party bank to take the fees out. You selected that. There is also an Extra $40 Refund Processing Service charge you had to agree to. So how much is missing after all the fees?
If the difference is about $1,400. Did you enter the amount you got for the 3rd Stimulus payment? You tried to claim it again on 1040 line 30 for the Recovery Rebate Credit. Line 30 is only if you didn't get the full amount or qualify for more.
Double check your bank statements and check your IRS account to see what they sent you. Check both IRS accounts if married. If the IRS says they sent it to you but you didn't get it then Request a trace for a missing third Stimulus payment
https://www.irs.gov/newsroom/questions-and-answers-about-the-third-economic-impact-payment-topic-j-p...Your Online Account | Internal Revenue Service
