Found this…
[Thu Dec 17 11:28:21 2015] [error] [client 192.0.xx.xx] client denied by server configuration: /home/clxxxxxx/public_html/wp-content/uploads/offers-for-woocommerce-logs/index.html
[Thu Dec 17 11:28:18 2015] [error] [client 192.0.xx.xx] client denied by server configuration: /home/clxxxxx/public_html/wp-content/uploads/offers-for-woocommerce-logs/.htaccess
Thanks for the prompt response. I clicked Save Changes in each of those, insuring that they are enabled, but no luck.
Yes, all Offer emails are enabled in WooCommerce->Settings->Email.