In the integration tab i did set "Default Content Type" to none - but when i click "article->new" button i swill get the popup from seblod. I would realy like to have the article system to work as normal.
There is no way to totally disable Seblod content types unless you uninstall Seblod. You should set Add Button to Dropdown and Add buttton (alternative) to Above, then first option will be Joomla Article. Or with redirection disabled as you already did, you can use Content->Articles->Add new article menu.