Re-check if all capabilities under ‘WooCommerce->Orders’ were granted to a role.

‘edit_shop_orders’ capability is enough in general to edit existing orders and create new orders.

If you have a turned ON the User Role Editor’s option “Activate “Create” capability for posts/pages/custom post types”, then ‘create_shop_orders’ capability is required. Add it if it does not exist for some reason.

If all mentioned above will not help, it would be a conflict with some plugin. Try to deactivate all plugins except WooCommerce and re-test. If it will help, reactivate plugins one by one to isolate a problem.