i have seen that member profile is show as .com/member/xx.html

is any way to modify it to "miembros"?

so url would be

.com/miembros/"memberxx".html

Yes, you can use whatever 'folder' name you wish. 'member' is commly used, as it's in the presets, but you can customize it.

and where i can change that?

i have seen on a demo, that i doesnt have an option on the panel to change member to whatever user want..

It is an advanced setting in vbseo control panel.

You're not showing as a customer, so I will not pinpoint how to do this in order to prevent fraud. We do not support non-licensed customers.