angelleye on "[Plugin: Offers for WooCommerce] Getting "there was an error sending your offer""

I just did a bunch of updates to the site including WP 4.5.1 and didn't think to check this plugin. But now I am getting this error.

Offers do show up in the admin interface, but no email is sent and the above error appears on submit.

Any clue on how to begin troubleshooting this? The site is:

http://www.soundethics.com and there are a few products on the front page that have a Mystery Button (which is the offer button).

Thanks

https://wordpress.org/plugins/offers-for-woocommerce/

I have tested the plugin on 4.5.1 without any issues, and I haven't had any other user reports of problems, so there must be something unique there causing the problem.

Can you check your PHP error logs on the server to see if that sheds any light on what happened?

I submitted an offer on your site and used Firebug to see what happened. It's coming back with a 500 Inteal Server Error in admin-ajax.php, so yeah, you should be able to see that actual error in your PHP error log.