How do i delete old photos from my older posts? my storage is being wasted on old photos

[mikolee]

Removing Stored Attachments
Go into your Profile page
Select the drop-down ‘Forum Actions’ and select ‘General Settings’
Scroll down the left panel and click on ‘Attachments’
Click the selection boxes for all the images that you want to remove or select the top box for ALL
Click on ‘Delete Selected’
WARNING:
Any images that you delete will be removed from the original threads so clear down only the very old as a starting point.

I tried that already and all the posts with attachments have no option to check to delete.
In about 2 dozen threads I’ve made only the latest one posted today has an option to check to delete.
The rest (closed sales threads) have no option to delete. Half my storage space are sales threads with
Pictures I can’t delete.