Problem solved. First I had to reformat the Aqualink settings by following the directions more precisely. The formatting is not intuitive, but I can't argue with the results. After that, the pump starts and runs, but only at 1500 rpm, no matter what flow is commanded.
Then, looking closer at the pump manual, I realized that I have an Intelliflo VSF. So I reformatted it as a VS in the aqualink application and it controls speed correctly.
There have been some comments that the VF version doesn't get you much over the VS. And I follow the logic that the need for flow control to compensate for filter plugging is not much of an issue. However, with the VF and VSF, you do get a pressure and flow measurement along with the RPM, which I find very helpful to get a better understanding of my system.
Thanks ajw22 for the suggestion and Jim R for the support.