Owncloud Login from Wordpress Website

Hi everyone!

I try to figure out how to login to owncloud 10.0.3 through my wordpress website? I found this article https://forum.owncloud.org/viewtopic.php?t=21865 related to OC7 I think, but this doesnt seem to work anymore.

Could you please support me with the parameters I have to change in destinct OC-files and help me with the right login-form?

Thanks a lot!