I will paste here the whole scenario on what is happening!
this is the starting url:
after pressing enter this one comes out with a bad request error message:
Then i edit http to https and pressing enter, this is what comes out with a login page and no errors:
After putting email and password then pressing login this is what comes out:
It comes with an error message of bad request.
Then i edit http to https, and pressing enter, then Odoo logs me in.
when i logout this is what comes out with bad request error:
And i have to add https to complete the page display of logout.
Now you can see what are the procedures to login into my Odoo 10.
For this url i pasted 184.108.40.206 is fake not the real one.