Hi Alex

Thanks for posting in the Lucidchart community! Some templates require an upgraded subscription to edit. When you access the template a pop-up should appear informing you whether you are trying to access a feature that requires an upgraded subscription to edit. Unfortunately these templates are only editable with the level of subscription shown in that pop-up message. If anyone has any questions about this please feel free to post a response below! More information about what is included with each subscription level can be found in the Account Types article in Lucidchart's Help Center. 

Hi! http://lucidspark.zendesk.com/hc/requests/4342481 I raised the previous request but the recommendation made also did not work. Could someone please investigate? Thanks

Hey Marine

Thank you for continuing this thread! To delete an unassigned row you will need to double click on the row (it will be outlined in blue when selected) right-click and select delete. 

Hope this helps -- please let me know if you have any other questions!