private async Task AutoCreateUserAsync(bool useAnonymous = false)
    {
        Debug.Log("1️⃣ Initializing AutoCreateUserAsync...");

        using var underlyingHttpClient = new HttpClient { BaseAddress = new Uri(icHost) };
        var httpClient = new DefaultHttpClient(underlyingHttpClient);
        var agent = useAnonymous ? new HttpAgent(httpClient) : new HttpAgent(httpClient, DelegationIdentity);
        Debug.Log($"✅ HttpAgent created with host: {icHost}");

        var canisterId = Principal.FromText(greetBackendCanister);
        var client = new GreetingClient.GreetingClient(agent, canisterId);
        Debug.Log("✅ GreetingClient created with DefaultHttpClient.");

        // [Other initialization code omitted]

        try
        {
            Debug.Log("7️⃣ Preparing create_user call...");
            CandidArg arg = CandidArg.FromCandid(
                CandidTypedValue.FromObject(userPrincipal),
                CandidTypedValue.FromObject(uuid)
            );
            Debug.Log("🔄 Calling create_user on canister...");
            const int maxRetries = 3;
            for (int attempt = 1; attempt <= maxRetries; attempt++)
            {
                try
                {
                    CandidArg reply = await agent.CallAsync(canisterId, "create_user", arg);
                    Debug.Log($"✅ create_user response: {reply}");
                    break;
                }
                catch (Exception ex)
                {
                    Debug.LogError($"❌ Attempt {attempt}/{maxRetries} Failed to call create_user: {ex.Message}\nStackTrace: {ex.StackTrace}");
                    if (attempt == maxRetries)
                    {
                        Debug.LogWarning("⚠ Max retries reached. Skipping create_user...");
                        break;
                    }
                    else if (ex.Message.Contains("Certificate signature does not match"))
                    {
                        Debug.LogWarning("⚠ Certificate mismatch detected. Retrying after delay...");
                        await Task.Delay(1000);
                    }
                    else
                    {
                        throw;
                    }
                }
            }

            // [Remaining code omitted]
        }
        catch (Exception e)
        {
            Debug.LogError($"❌ Unexpected error in AutoCreateUserAsync: {e.Message}\nStackTrace: {e.StackTrace}");
        }
    }

    // [Other methods omitted]
}