Your Okuson password should be kept secret. If you give it to someone
else then they could inadvertently submit homeworks on your behalf,
with different answers to the ones you submitted. You would then be
graded on that person's submission and not your own.
If you use a PC, laptop or phone and allow the device to remember
your password then, in effect, you are giving all subsequent users of
access to your password.
If you have already stored your Okuson password on a device then I
would suggest that you change your password and subsequently resist
from storing the password on any device.
If you successfully submit answers then Okuson will show a page with
the phrase SUBMISSION SUCCESSFUL. If you don't see this page then your
answers have not been submitted.
The MA180/MA185/MA190 Okuson page is available here.