Custom post type article in theme annotum is not working in particular hosting

hello please help me, I am very angry, I haved installed theme annotum in localhost, byethost server, and that worked when i wanted to add an article, but now i have bought a hosting from https://www.mkhost.com.mk/ and when i want to add an article is showing me a blank page. I have tried with many different wordpress version, with different versions of theme but is not working. so when i click Add new article is showing me white blank page and link is this: https://universi.mk/wp/wp-admin/post-new.php?post_type=article , i try to reload but no, post and page types are working… I will be grateful if helping me even a little bit.