• Download BP Autologin On activation
  • Unzip it, you will get a directory named bp-autologin-on-activation
  • Upload bp-autologin-on-activation to wp-content/plugins
  • Login to dashboard, visit Plugins->Installed and activate it. If you are on multisite, visit network admin->Plugins->Installed and activate it.
  • let your users enjoy the extra convenience 🙂

And alternative method would be uploading the zipped file via wordpress plugin installer.