[com.deepseek.chat] Can't sign in with Google account

**Affected app**
Name: DeepSeek
Package id: com.deepseek.chat

**Describe the bug**
Can't auth with Google Account.

**To Reproduce**
Steps to reproduce the behavior:
1. Go to app
2. Click on 'Sign with Google'
3. See error

**Expected behavior**
GAPPS too old or not installed.

**System**
Android Version: 16
Custom ROM: cDroid 12.10

**microG**
microG Core version: 0.3.15.250932
microG Self-Check results: All ticked

No source files or tests are named. Start by reproducing the Google sign-in failure in DeepSeek on Android 16 with the listed microG versions, then inspect the available authentication error details. Done means identifying and fixing the cause so Google sign-in completes under the reported setup.

Written by the indexing model from the issue text.