Which chart is right?

So I've been using both Glow and FF to chart glow originally had my O date at CD 14 and I have to keep pushing back my AF date so I think it's changing, FF has stayed on CD17. Trying to figure out when to test my cycles are normally 28 days long but it was 30 last month so not sure when. (The reason there's open dots is because I put everything else in the same day from what I had in Glow)