won't show chapter titles when compiling

Hello, I’ve been having trouble with the compile function. Every time I try to compile in .doc format, the chapter titles never appear in the compiled version. I’ve ticked off every level in the formatting tab, checked everything in the section layout tab, everything is fine. I’ve used it in the past successfully but now, for this novel, it just won’t work.

Can someone help me please or if it’s a bug, please fix it.