也许你该把日期去掉

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read, write: if
          request.time < timestamp.date(2021, 12, 12);
    }
  }
}

经过批准的答案是非常危险的，因为任何人都可以在没有任何许可的情况下读取或写入您的数据库。我建议用这个。

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow write: if request.auth != null;
      allow read: if true;
    }
  }
}

这将允许授权人员写入数据库，而任何人都可以读取数据库，以防访问者访问网站。

进入数据库->规则:

然后更改如下规则

service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read, write: if false;
    }
  }
}

以下

service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read, write: if request.auth != null;
    }
  }
}

检查是否在IAM & Admin https://console.cloud.google.com/iam-admin/iam中添加了服务帐户，并设置了适当的角色，如Editor

转到Apple Certificates, Identifiers & Profiles: 选择您的密钥上传firebase并进行检查: 访问DeviceCheck和apptest api以获取您关联的数据

在这里输入图像描述

时间限制可能已过

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {

    // This rule allows anyone on the internet to view, edit, and delete
    // all data in your Firestore database. It is useful for getting
    // started, but it is configured to expire after 30 days because it
    // leaves your app open to attackers. At that time, all client
    // requests to your Firestore database will be denied.
    //
    // Make sure to write security rules for your app before that time, or else
    // your app will lose access to your Firestore database
    match /{document=**} {
      allow read, write: if request.time < timestamp.date(2020,7, 1);
    }
  }
}

这一行更改了日期:

 allow read, write: if request.time < timestamp.date(2020,7, 1);