Hello friends. There have been a number of WooCommerce plugin and theme updates that patch issues related to the WooCommerce 3.0 upgrade and all of them are now available for download:

• WooCommerce Measurement Price Calculator Version 3.11.3, Released on 2017-04-18
• WooCommerce Checkout Add Ons Version 1.10.2, Released on 2017-04-18
• WooCommerce One Page Checkout Version 1.4.1, Released on 2017-04-18
• WooCommerce Moneris Gateway Version 2.7.1, Released on 2017-04-18
• Storefront Product Hero Version 1.2.10, Released on 2017-04-13
• WooCommerce Google Analytics Pro Version 1.3.0, Released on 2017-04-18

Existing members, you can find these updates by logging into your account and checking the downloads area.