Need help understanding IRS transcript codes 570, 971, 571 for my 2023 return - What's happening with my $524 refund?

Filed back in March and my transcript is showing all these codes but I have no idea what they mean. I just checked my IRS Account Transcript for my 2023 tax return (Form 1040) from the IRS website and I'm confused about what's happening with my refund. My transcript shows: ACCOUNT BALANCE: -$524.00 ACCRUED INTEREST: $0.00 AS OF: May 28, 2024 ACCRUED PENALTY: $0.00 AS OF: May 28, 2024 ACCOUNT BALANCE PLUS ACCRUALS: -$524.00 According to the information from my return (or as adjusted): FILING STATUS: Head of Household EXEMPTIONS: 04 ADJUSTED GROSS INCOME: $22,757.00 TAXABLE INCOME: $786.00 TAX PER RETURN: $317.00 SE TAXABLE INCOME TAXPAYER: $1,520.00 SE TAXABLE INCOME SPOUSE: $0.00 TOTAL SELF EMPLOYMENT TAX: $317.00 The transactions section shows: CODE 150: Tax return filed - CYCLE 20241905 - DATE 05-27-2024 - AMOUNT $317.00 CODE 768: Earned income credit - DATE 04-16-2024 - AMOUNT -$741.00 CODE 971: Notice issued - DATE 05-27-2024 - AMOUNT $0.00 CODE 570: Additional account action pending - DATE 05-27-2024 - AMOUNT $0.00 There's a 570, 971 and now a 571 that just showed up. I'm really confused about what these codes mean, especially the 570 "Additional account action pending" and the 971 "Notice issued" codes. What does this mean for my refund? Is something wrong with my return? Will I still get my refund? The transcript says my Request Date was 05-10-2024 and Response Date was also 05-10-2024. Can someone please explain what these codes mean and what I should expect next? I'm really confused and need some help understanding what's going on with my refund.