Make sure your original remote control is infrared remote and loaded with batteries. Note that Bluetooth, Wi-Fi and RF remotes are NOT supported.
During the learning process, please make sure:

A. SofaBaton F2 and the original remote are placed in head to head position, on a flat surface and are aligned

B. The infrared transmitter of SofaBaton F2 is less than 1 inch apart from that of the original remote control

C. Try to keep both of the remotes still during learning process

D. Hold the to-be-learned button for more than 1 second until the green light flashes 3 times and then turns red
Please make sure the batteries in SofaBaton F2 are sufficient and are installed properly.