Hi @dmcsupport,
Very sorry on the wait for this response!
If I use this plugin woocommerce sequential order numbers – https://woocommerce.com/products/sequential-order-numbers-pro/, will it help? Could it be the conflict between ORDER ID and POST ID?
Orders are Posts, so this should not interfere as they are one and the same.
For the question regarding the Sequential Orders Pro, it will sync orders to show in sequential order after it is installed, it is not retroactive. In this case, that particular order will not be visible with the plugin installed or not, if it is not already there. If it was there, you can disable it temporarily to see if you can access the order.
I logged in as admin and tried to access wp-admin/post.php?post=9630&action=edit. Got error – Sorry, you are not allowed to edit posts in this post type.
Be sure that you are logged in as a full Administrator, and once you are then if you are still unable to access the order it might be a conflict with a plugin or theme. If you have any plugins such as User Role Editor or User Switching they can cause this. If the issue is still persisting, use a staging site (a copy of your Live site – your Host can assist with this if you do not have one) and do the following:
The best way to determine if the issue is being caused by a theme and/or plugin is to do the following:
1. Temporarily switch your theme back to the Storefront or Twenty Seventeen Theme.
2. Disable all plugins except for WooCommerce and your shipping/payment gateways.
3. Test to see if the issue has been resolved.
If that resolves the issue, then one-by-one you can switch back your theme and re-enable your plugins, testing in between, until you find the one causing the conflict.
Again, we do recommend a staging site for these tests so that your Live site is unaffected. Please let me know how it goes!