Review INVALID CODE

I have tried to borrow loan with mobikash and I was requested to send some shs197 of which I did then tried to input the mpesa code but in vain only told the code is invalid try after one hour. What is the problem, please assist.

PII32OS7HP Confirmed. Ksh195.00 paid to SELFTECH VENDORS. on 18/9/21 at 10:36 AM.

PII433VEIA Confirmed. Ksh5.00 paid to SELFTECH VENDORS. on 18/9/21 at 3:07 PM.