TOC wont show up

Hi,

I have always been able to get the TOC to show up in the Kindle Previewer button next to the cover button. But now I don´t seem to be able to make this happen.

I have been using the html code <a name=“toc”></a><h2 id="toc">Table of Contents</h2> and this has always worked for me before - but now it doesn´t.

Obviously the toc in the book itself still works but there is no way of getting back to it by clicking the TOC button.

Any idea why this no longer works and what code I should use to make it work again.

Thanks
Nigel