Older Hub not detecting newer motion sensor

I just recently purchased a older version 1 smartthings hub on ebay to do some testing. On yesterday, I purchased a new smarttings motion sensor however I have yet to be able to pair the 2 devices together. I’ve done all the resetting of the motion sensor and yet the hub will not detect it. I’m starting to think the two items are not compatible but I’ve found nothing online anywhere that says that they shouldn’t be. Any help on this would be appreciated.

Should be compatible, my guess is the used hub is having issues or something is disabled. Support should be able to get you right.

I managed to get it working… support gave me a couple things to try and ultimately, it may have been some interference causing some issues… thanks for your input though…