When using WPA2 it implies using CCMP or Cipher Suite type 4 (AES-CCM-128).
An option for WPA2 is it can use TKIP for the encryption type. WPA3 and OWE has no option and must use CCMP (AES).
The 7.3 controller has broken down the selection finer.
If WPA2-CCMP is required, select PSK/None in authentication and then select CCMP for Encryption type.
This will give you the same selection WPA2-CCMP in 5.9.7.