Make sure your TellStick is set up correctly with the manually set time zone and geographical location. You can follow this guide.
Log in to your Telldus account via the Telldus app or live.telldus.com. Select “schedule / scheduling”. Then select which device you want to schedule and whether the device should be turned off or on. Choose whether it should take place after the sun rises or sets. You can choose if you want it to take place with a time delay, otherwise you can choose which days it should occur. Review your scheduling to match and click “approve”. Do not forget to set both for sunrise and sunset. Use this guide to see how it’s done.