Hi! Sorry to hear you're having problems with Flic. Flic Single buttons are meant as an affordable version for controlling a specific set of tasks, in this case, lights. So they won't allow as much flexibility as the normal Flic buttons, but should work with the supported list of products: Philips Hue, Lifx, Harmony, Lightify, WeMo, Wink, Eon, Telldus and IKEA Trådfri.
Flic Single currently doesn't support direct integration with other lighting products but you can link them via IFTTT with a normal Flic. If you purchased Flic Single with the intention of using IFTTT we can still offer you a discount on the normal Flic or you can return your Flic Singles if it was a recent purchase. Just drop us a message with the details at support@shortcutlabs.com.
Also, if you keep on experiencing these bugs with the Harmony integration, it would help us if you described them to support.
I really hope this helps! Let me know if I can do anything else 🙂
P.S. If you have any more suggestions feel free to post them to http://ideas.flic.io/, where we look into integrating the most supported ideas 😉