When attempting to add a new Coupon for WooCommerce, some of our admin accounts are getting an “insufficient permissions” error. These are main root level admins, not role created admins. I have verified that the role editor plugin is causing the issue as we are able to add coupons without this message when the plugin is disabled.
Test admin you created for me can not add new coupons too. Quick checking shows, that You have ‘Activate “Create Post/Page” capability’ option active. It turned on automatically with “Activate user access management to editing selected posts and pages” together. But “Administrator” role does not have ‘create_posts’ and ‘create_pages’ capabilities included. This is the reason of the problem. Administrators who may add new coupons has those capabilities added directly to their users.
After I added ‘create_posts’ and ‘create_pages’ capabilities to the “Administrator” role, test admin (you created for me) can add new coupons. I’m sure that it will be the same for the rest administrators.