Moving WordPress, and got error admin page!

Hi all,
It’s my first time to move wordpress from localhost to hosting, so I use the free service for my hosting and domain.

I use this step:
1. Moving all my wordpress files on localhost (htdocs/) to the server .
2. Exporting my database in localhost (in *.gz format).
3. Importing to database server.
4. Change the home, and siteurl data on database with this instruction ( https://www.mydigitallife.info/2007/10/01/how-to-move-wordpress-blog-to-new-domain-or-location/ ).

My blog is running but I can’t access the admin page.
Here’s the error message :
“You do not have sufficient permissions to access this page.”

Is anyone know how to fix this?
Thanks before.