Displaying ads after every first post on a thread (postbit_legacy)

[XYZ500]

Hi,

I was displaying ads after every first post on every thread of the forum. Someone told me to edit the postbit_legacy template and adding this code at the bottom:

<vb:if condition="$post['isfirstshown']">
<li class="firstpost_advert_container"><div class="firstpost_advert">
  <center><li><b>SPONSOR ADS</li></b>

BANNER LINK HERE

</li>
</vb:if>

I did it and it worked fine for months. Now today I just noticed that the ads are gone. They are not showing up after every first post anymore. I tried reloading the template, changed banner etc. Nothing works.

I have no idea what happened. From the last time I saw these ads till now, I did not change any file or edited any template. I only uploaded logo on the footer of my forum. That's all I did. And even for that, I didn't make any changes, except uploading a png file.

Can someone tell me how to fix this and start displaying the ads again?