Flash has been removed in new versions of Talex Webshop due to that it can often ruin responsiveness and mobile adaptations.
Contact Talex if it is still important for you to use Flash.
If you are to insert a Flash in a separate page in admin > Page and text manager, do the following:
1. Upload the Flash file in admin > Tools > File manager.
2. Go to admin > Page and text manager and click on "new page".
3. In the field "Text and / or image", click on the flash icon (the icon with an italic f).
4. Enter the path to the flash file (eg ../files/flashfilename.swf) in the "Flash movie (.swf)" field and enter the width and height of the flash movie / animation in "Size".
5. Click "Create".