Usage on profiting organization

Hi team,
We just want to use this application to store credentials on business scope. The number of our employees are roughly 60. Is it free to use this application on our prem server for business purpose?
Is the licence suitable for this purpose?
And if it is possible can you change the license MIT or more copyleft license?
If yes, what are the important notes that I need to take care ?

I am waiting for your answer,
Best regards,

OS: web web
App: AuthPass (1.9.12+2031) [design.codeux.authpass.web]
{userAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/ Safari/537.36}