Password issues following firmware update

[Unitronltd]

Hi I recently upgraded to 1.4.6 and everything has gone fine and I logged back into the unit with no problem,

About an hour later when logging in it is saying username or password invalid, which I know to be correct.

I can login into the unit via ssh without an issue its only the web interface,

Can anyone assist?

Thanks

John

[Julian]

Login via SSH, issue the following commands.

Config t
Cred password (your pass here)
Control+z
Wait a sec while it finishes writing to config,
Hit enter once the message pops up to confirm changes

Then log into web UI