ovulation or lack there of....

Glow said af was due 11/28 I took an ovulation test two days ago no surge so it moved my af start date two days. It then told me yesterday was my peak day, so just for shits and giggles I took another opk same thing no surge. Line I'd super light barely can be seen. So now it's moved af days again. NO AF THIS MONTH!!! And I mean not even a few days from her last visit fell into this month. So now it says af due first week of Dec, but I usually start a week later.... This is the first time since aug/Sept that I've tracked my ovulation and during that time there were no issues. So confused