Thanks, Steve S., your last suggestion was correct. That was the "missing link" so to speak.
There was a checkmark in the Enable column, as I wanted (I may have put it there, I don't recall), but there was also a pre-existing checkmark in the Value column (which has 2 sub-columns). When I clicked on the Value column checkmark to remove it, it moved to the other subcolumn. It seemed to just go back and forth between te two columns But, by clicking on the checkmark again (or several times, I don't recall now), I got the check to disappear from the Value column completely (finally!) And the Checkmark remained in the Enable column. So, yes, it is important to remove the checkmark(s) from the Value column. But, apparently, you must be persistent in clicking these checkmarks in order to get them to disappear. Good to know -- for anyone else out there trying to configure your WIFI with the Obi.
After I got this done, I scrolled down to enter my Access Point 1 info, and was able to enter it successfully. Halelujah! After hitting Apply, I was able to disconnect the ethernet cable from the Obi200, and was able to move the Obi200 and connected phone to a remote location, power it up, and have it work.
So, thanks for your help. I don't understand why the devices do not come with clear step-by-step instructions, though. Or ,at least, good clear instructions on the website.