For photo blog you dont get credit, if you want credit, you need to publish blog with journey details and ecperiences. see other's profile to get some clue.
all the best.
Publish photo blogs only with unique caption or tittle to it. But chances will be little lower. Instead when you publish trip with some paragraph then for sure you will get at least some points. Try both.
If you are working on a laptop then there's a "Publish trip" button on your top right of the screen and if it's a smart phone then click on the "+ icon" on the center bottom of the screen and then "publish trip".