I opened a case with Meraki. What was happening was I was not getting the blue button that says FINISH EDITING.
If I created a rule the button was not showing up. Working with TAC we found that if I went to the page and then refreshed the page the button showed up but for new sites with new rules I was having an issue.
After trying Firefox I did not have the same issue. Chrome was not always giving me the button. could have been my security settings.
So - be sure you get the FINISH EDITING button - and then click on save.
I am going to try again with objects. Otherwise too many IP addresses to have to type in.