As far as I know, the date for a season of any tv show here on TMDb is set automatically when you add the first episode to the season.

In your case, go to this page:

https://www.themoviedb.org/tv/72562/season/1/edit?active_nav_item=episodes

and add episode 1 with the correct "air date". This will most likely solve your issue.

Best wishes,

janar

"Love [...] is the most incredible gift to give and to receive as a human being." - Ellen Page

I see this is now fixed, thanks @janar72 for the accurate explanation.