UnityでAdmobを使用して広告をつけたが表示されない

下記urlを参考にバナー広告をつけ、iPhoneで実機テストしたのですが表示されません。

【Unity 収益化】Admobのバナー広告の実装（iOS）
https://simanezumi1989.hatenablog.com/entry/2020/03/17/175109

スペック
・MacbookAir2020
・iPhoneXS
・Unity 2019.2.21f1
・Xcode 11.4.1
・Admob 5.1.0

試したこと
・GoogleMoblieAds.frameworkをプロジェクトに追加

気になること
・ビルドは可能だが、Unity内でデバッグプレイするとエラーが出る

EntryPointNotFoundException: GADUInitialize
GoogleMobileAds.iOS.MobileAdsClient.Initialize (System.String appId) (at Assets/GoogleMobileAds/Platforms/iOS/MobileAdsClient.cs:47)
GoogleMobileAds.Api.MobileAds.Initialize (System.String appId) (at Assets/GoogleMobileAds/Api/MobileAds.cs:58)
GoogleAds.Start () (at Assets/GoogleAds.cs:27)

・実機テスト時のXcodeのデバッグログ

2020-05-01 12:10:00.273406+0900 AdTest[49109:6489521] Built from '2019.2/staging' branch, Version '2019.2.21f1 (9d528d026557)', Build type 'Release', Scripting Backend 'il2cpp'
2020-05-01 12:10:00.278625+0900 AdTest[49109:6489521] -> registered mono modules 0x105213d10
-> applicationDidFinishLaunching()
2020-05-01 12:10:00.329363+0900 AdTest[49109:6489521] Metal GPU Frame Capture Enabled
-> applicationDidBecomeActive()
2020-05-01 12:10:00.563541+0900 AdTest[49109:6489718]  - <Google>[I-ACS025031] AdMob App ID changed. Original, new: (nil), ca-app-pub-7628638058295308~8710691668
GfxDevice: creating device client; threaded=1
2020-05-01 12:10:00.661900+0900 AdTest[49109:6489762]  - <Google>[I-ACS800023] No pending snapshot to activate. SDK name: app_measurement
Initializing Metal device caps: Apple A12 GPU
Initialize engine version: 2019.2.21f1 (9d528d026557)
2020-05-01 12:10:00.663785+0900 AdTest[49109:6489762]  - <Google>[I-ACS023007] Analytics v.60402000 started
2020-05-01 12:10:00.664091+0900 AdTest[49109:6489762]  - <Google>[I-ACS023008] To enable debug logging set the following application argument: -APMAnalyticsDebugEnabled (see http://goo.gl/RfcP7r)
2020-05-01 12:10:00.859644+0900 AdTest[49109:6489725]  - <Google>[I-ACS800023] No pending snapshot to activate. SDK name: app_measurement
2020-05-01 12:10:00.882704+0900 AdTest[49109:6489725]  - <Google>[I-ACS023012] Analytics collection enabled
2020-05-01 12:10:01.041200+0900 AdTest[49109:6489521] Unbalanced calls to begin/end appearance transitions for <SplashScreenController: 0x133e21b00>.
UnloadTime: 1.861083 ms
2020-05-01 12:10:02.993646+0900 AdTest[49109:6489521] <Google> Limit Ad Tracking may be enabled. To get test ads on this device, disable Limit AdTracking.
2020-05-01 12:10:03.209322+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.209358+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.211478+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.231840+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.246595+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.246671+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.251727+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.257416+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.258551+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.330564+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.330885+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.331498+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.331632+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.334400+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.334465+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.339754+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.340017+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.353277+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.599468+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.792892+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:03.806238+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:04.261952+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1
2020-05-01 12:10:04.273118+0900 AdTest[49109:6489521] [Process] kill() returned unexpected error 1