Problem with links

Hello, the blog is running about 1-2 years, didn’t change nothing in the past 3-4 days, but yesterday there was and still is a problem with the links, all links you click open the main blog page, but the link in the URL tab stays, is this a redirect??! i don’t think so.. or is it… where to look to fix this problem can you help me ?

the address of the blog is https://www.jdmworks.com (sorry it’s not in english)