Hi NOUMAN MEHMOOD , 

Thanks for reaching out. What are you trying to do within the software? You can use any login if you have the username and password, however, user setup settings and access might be different depending on how the user was set up. The default sysadmin username has the most privileges. If you require a password override to access this profile again, please reach out to our customer services team at 1-888-522-2722.

Warm Regards, 
Erzsi