I would like to ask where we could get the ThingWorx Extension SDK for ThingWorx 8.4 or previous version?. I need this to develop a custom widget for ThingWorx 8.4. In the marketplace only available for 8.5 to 9.2 versions.
ThingWorx Platform 8.4 standard support ended January 24 2021. Product Development has removed the older version of the product because they are no longer supported. When the product versions were removed, the Market Place items were updated.