Please see: Wi-Fi Protected Access - Wikipedia
The WPA/WPA2 password can be either a passphrase of 8-63 printable ASCII characters OR a pass key of 64 hexadecimal digits. The Wyze app gives an error when you enter 64 characters for the WPA/WPA2 password.
This is incorrect, In the case of 64 characters, it should check to make sure it is only contains hexadecimal characters and then use it for the pass key instead of generating the passkey from the SSID and Passphrase.
This makes it impossible to use 64 characters pass keys.
[Mod Edit]: Title Modified to Enhance Search Clarity.