On shared account I can not see the issue. Do users in profile have set default language to Portuguese? Try set vBET->Misc->Redirect to user language to Disabled.
On account that you created for me, I do not see a issue. Please describe the issue in more detail.
Try set vBET->Misc->Redirect to user language to Disabled. Your settings are correct, but the effect that you describe can cause option vBET->Misc->Redirect to user language.
I am glad that you solved the issue.