Plug-ins for ads are extremely bloated and I didn't want to use any of the ones I tried. So, for now, I just put the code into the theme files. That will need to be replaced each time we update the theme until we can make a child theme or find another way. Go to Appearance > Editor and then select header.php (make a copy of it first in cPanel file manager and delete the old copy so we have a copy from the updated theme).
(use Code Snippets plug-in instead of re-doing after each update)
Lottofaucet:
Find the text
and paste immediately below it
<!-- banner --><div class="banner-468x15"><iframe data-aa='887840' src='//ad.a-ads.com/887840?size=468x60' scrolling='no' style='width:468px; height:60px; border:0px; padding:0;overflow:hidden' allowtransparency='true'></iframe></div><!-- end banner -->