I forgot my mtn MiFi login details and i have already changed it from the default admin password, what should i do?

Can't access admin login after logging in and changing the password and username , now I can't login again. Help pls .

For all those who cant get to the configuration page because the back of their MiFi is scratched up and the MiFi reset all you need to do is this : -firstly make sure you have...