High ACR, Low urine creatinine. Reason?

Hi , my husband had a urine and blood test in July this year Egfr was 93 normal , blood creatinine normal Random urine collection - Albumin 56 mg/l Urine creatinine 1.7 mmol/l ( lab sugested low creatinine , may have to redo with first morning urine) Acr was 31.8 mg/mmol which is high We have redone tests in October Egfr is same normal, blood creatinine normal And From urine results - Sample gravity <= 1.0005 (it says dilute urine) Protein - negative Albumin 36 mg/l Urine creatinine 1.3 mmol/l (same lab suggested  creatinine may falsely elevate ACR. Suggest repeat using first morning urine.) Acr is 30 mg/mmol Note - acr limit is <=3 mg/mmol male - 31 yrs, no bp, no diabetes But has left renal atrophy  with size of 8cm and normal right kidney(nephrologist suggested that may be there since childhood as we know this since 2021) We are confused if its dilute urine causing creatinine to be so low and elevate acr or any other reason? Please help