So this post helped me resolve my issue, here’s exactly what I did below
- Go to Groovy IDE and create a new device handler using the linked post above
- In the SmartThings app, go to add a new device and choose Scan for Devices
- Sync the Repeater/Extender first by placing a pin in the hole and pressing the reset button for 5 seconds
- Once SmartThings app connects the repeater, reset the Tredansen blinds by holding both buttons on the blind for a few seconds until the blind moves slightly and the lights start flashing
- On the SmartThings app, scan for new devices
- Insert a pin into the repeater/extender again and press the reset button for 1 second
- Blinds should show up and automatically be added
- Repeat steps 4-7 for additional blinds
These exact steps are what I did to solve and get everything connected