@robert I set everything exactly according to your specifications and could not see any improvement.I also deactivated all plugins except for wpforo...

Unfortunately, this diffuse login behavior still exists. For example, if I make a mistake and enter an incorrect password, I don't get a notification....

no, it's not a multisite installation

Thank you for your reponse. I've already read the article. I have neither mixed content nor an active cache plugin. I noticed that I am registered...