Thread:Project:Support desk/Problem with links after changing my hostiing

Hello all! I had changed my hosting and all seems to be goog, but I have noticed that links looks different:

before I changed my hosting it was like: www.mywiki.com/index.php/Page_title. After changing my hosting it looks like www.mywiki.com/index.php?title=Page_title

And all links are clickable and all works propely but when visit pages all links are with ?title=

How can I fix it? What should I do?