Is the reward program from Google Ads official?

Question

Google Ads

Once again, a letter arrives from https://partnersrewards.withgoogle.com/get-started/ about the accumulated points due to the successful management of the advertising account.
To exchange points for gifts, you need to log in to their website and give permission to their application.

I don’t understand why they need permission to manage advertising campaigns and what is the developer’s left address [email protected] ??