@jefferson-piscos, the debug enabled is under the OAuth tab. Go ahead and enable that and check the logs.
Also it is a little weird that you are redirected to a consent screen. Do you have any consents configured? You can go to Settings -> Consents in the Admin UI.
Then you can check the user and see if you have any set for the user you are testing.
Hopefully that will clear it up and you will be good to go. If not, let's see what those logs say.