UTM Home 9.508 Admin Password Reset How To is not working - maybe for 9.508 it is a Little bit different?

Hi Folks,

i have a utm home (9.508, i hope so - the utm online help "says" in the bottom line: Sophos UTM 9.508) and i lost the paper with the admin Password.

I tried the following how to:

https://community.sophos.com/kb/en-us/115346

and i also tried the german one:

https://pits-online.info/2017/02/03/sophos-utm-passwort-wiederherstellen/

but both are not working. 

There is still only the Login Screen for user/password and not the changing password site.

I tried it many times, very slowly, step by step but allways the same result:

NO Changing Password site when i connected to the utm.

Maybe it is because of the utm Version???

I really hope someone can help me!

or

I have a backup config file, is this maybe helpful?

Thanks for helping

Harold