Order emails aren’t being sent after update

I have just updated Ultimate Member and Ultimate Member WooCommerce to the latest version. I logged on to place an order to test that everything was working as normal, but received no order confirmation emails, either on the business side or the customer side.

The site is sending email as normal as I have tested this using the contact form.

The issue is urgent as we are potentially losing business, I would appreciate a prompt response.

Thanks

Sarah