Runners without a closed hole
The majority of all runners (that connect your curtains to your curtain track) have a closed hole. Your curtain typically has a hook that goes into this hole, connecting your curtains to your track.
Certain uncommon systems have runners with a hook instead of a closed hole. Slide is not compatible with these runners. However, by replacing the runners in your track, you will be able to get your curtains ready for Slide.
Slide works on runners with closed holes and hooks on the ends, like this for example:
Hook system curtains do not work with Slide, below you will find a couple examples: