Issues with Power Meter connecting

I am trying to connect using an older Garmin Dongle (longer with rounded corners). It does say it is USB2.0. The software does recognize I have an ANT+ dongle, as it gives me a warning if I unplug it. I have a Windows computer and a PowerTap 2.4.

I let the software look for my power meter for a good 10 minutes and it did not find it. I had the wheel turning the whole time. I do NOT have the Garmin software installed. Any tips or advice to make this work are greatly appreciated!

What if you moved the dongle closer to your Powertap? It could be a limitation of the ANT+ range.