Everything is working fine for me, but I copied the links again just to be sure.
Clicking the Tumblr link on your Ko-Fi page gives Tumblr error page "There's nothing here.", the address the link attempts to open being "dam-peace.tumblr.com.
Clicking the Tumblr link on this page, attempts to open "https://www.tumblr.com/login?redirect_to=%2Fblog%2Fdam-peace".
Both links are tied to a username "dam-peace". However, doing a simple web search reveals that the actual Tumblr username should be "dbonner-games".