FS20Z-1 won't include

Hi all. First time posting here but I have taken advantage of much information from this forum. I’ve purchased a FS20Z-1 to control my garage door opener but cannot get it to include to my Vera2. I put the vera into include mode then press the button on the FS20Z-1 but it doesn’t include. I’ve tried excluding it and then retrying the include but that makes no difference. Any suggestions on what I may need to do differently to get this device included in my system?

Thanks in advance.