[hal]

The installation went well; I followed all the steps.
I was able to create a test user to see what the interface looks like from a customer's perspective. I found it quite interesting and very useful.
For some reason, I'm unable to authenticate to the admin account.
I accessed phpMyAdmin, selected the corresponding database, accessed the user field, changed the password, and encrypted it with MD5.
I tried to log in, but it still gives an error. I'm doing something wrong.
The authentication area I'm using is:
Ex: domain.com/admin/staff/login
Does anyone have a solution for this? Have you encountered this issue? 
Thank you.