keykeykeykey and passwordpassword are not the same - both are generated by FRITZ vpn tool "Fernzugang einrichten" when you use the tool to generate a config file for an iphone - if you use the tool to configure a single user/Pc it might be possible to do so - but you would have to change "use_xauth" to "yes" , insert completely (into the unencrypted version of the FRITZ generated vpn config file)

xauth {
valid = yes;
username = "name@name";
passwd = "passwordpassword";

and change in "phase2localid" the parameters "ipaddr" and "mask" both to 0.0.0.0