Android FCM problem.

Hello, dear developers. I've set up Android Chat SDK v2. So user which require support should receive notifications on their phone even if the app is closed. So, he can return and finish our support affairs.
So, I'll try to set up Firebase access, but can't save access credentials and app ID.  Please look at the screenshots following URLs. Please help me understand what I doing wrong.

https://i.postimg.cc/Kzh20xq8/Screenshot-2024-04-26-at-13-53-12.png

https://i.postimg.cc/W3vBMSzD/Screenshot-2024-04-24-at-16-35-02.png

Also by the follow this guide. I must upload the Firebase JSON file config. https://support.zendesk.com/hc/en-us/articles/4408821714458-Enabling-push-notifications-for-the-Chat-SDK-for-the-mobile-app#topic_mww_4yv_tkb

But there is no field on the website to upload some configs. Thank you for the help.