How to solve SDconnect toolkit error The key is not divisible

MB SD DOIP C4 SDconnect toolkit error: register/configure(2128) “The key is not divisible by 2 and therefore not hexadecimal.”

Working solution by www.autonumen.com engineer:

1. Do not check the option “Wlan parameters. workshop”.
2. Reset the key number as 26 lowercase letter: aaaaaaaaaaaaaaaaaaaaaaaaaa.