Problems on Stream TV

I’ve WebOS on Stream TV 50’ hardware.
I’m not able to update browser web and webos version.
Other problem is that I’m not able to login in Delepop Mode App. requestLogin error, but I’m sure that credentials are right.

Can you help me about?

Do you mean you installed webOS OSE on your TV? This website resources are for webOS TV, not webOS OSE. Please use webOS OSE resources. Thank you.

My tv has weos preinstalled.
It is WSTRU5022FTP by Stream System

LG SDK and LG API are only for LG webOS TV. Thank you.