I'm confusing and a bit frustrated, I don't know what's wrong but on my website when I play for the first time a video it's shown at my suggested quality "hd720", however when I click my API next video button, the quality of the video drop down to "default".
I already asked for some help here, but on this new question I wanna simply know what are possible reasons for that.
How can I check what's wrong if from console I have no errors?