[EC-CUBE] 4.1.1
[レンタルサーバ] Xserver
[OS] Linux
[PHP] 7.3.33
[データベース] MySQL 10.5.13
[WEBサーバ] Apache
[ブラウザ] Chrome
[導入プラグインの有無] 有 : ペイパルチェックアウト決済プラグイン(4.1系)
[現象]
「簡単ブログPro for EC-CUBE4」を購入後、インストールを試みたところ、管理画面のプラグイン一覧に、プラグイン名/バージョン/コードは表示されるのですが、ステータスやアップデート、有効化/無効化および設定ボタンが表示されない状態です。

下記コマンドラインでのインストールを試したところ、なんの反応もなくフリーズしてしまいました。
　bin/console eccube:composer:require ec-cube/cmblogpro

また管理画面からのインストールでは、「インストール完了しました」のメッセージは表示されるのですが、下記のとおりwarningも表示されました。
ec-cube/plugin-installerに関する警告が出ていることから、バージョンに不整合があるかと思っているのですが、アドバイスいただけないでしょうか。よろしくお願いします。

[11.8MiB/0.99s] Using version ^1.2 for ec-cube/cmblogpro
[11.8MiB/0.99s] ./composer.json has been updated
[14.1MiB/1.02s] Running composer update ec-cube/cmblogpro --with-dependencies
[16.3MiB/1.03s] Loading composer repositories with package information
[17.7MiB/1.89s] <warning>Dependency ec-cube/plugin-installer is also a root requirement. Package has not been listed as an update argument, so keeping locked at old version. Use --with-all-dependencies (-W) to include root dependencies.</warning>
[18.0MiB/1.90s] Updating dependencies
[18.7MiB/1.92s] Nothing to modify in lock file
[19.5MiB/1.94s] Installing dependencies from lock file
[20.1MiB/1.94s] Nothing to install, update or remove
[20.9MiB/1.95s] <warning>Package doctrine/doctrine-cache-bundle is abandoned, you should avoid using it. No replacement was suggested.</warning>
[20.9MiB/1.95s] <warning>Package doctrine/reflection is abandoned, you should avoid using it. Use roave/better-reflection instead.</warning>
[20.9MiB/1.95s] <warning>Package easycorp/easy-log-handler is abandoned, you should avoid using it. No replacement was suggested.</warning>
[20.9MiB/1.95s] <warning>Package setasign/fpdi-tcpdf is abandoned, you should avoid using it. No replacement was suggested.</warning>
[20.9MiB/1.95s] <warning>Package swiftmailer/swiftmailer is abandoned, you should avoid using it. Use symfony/mailer instead.</warning>
[20.9MiB/1.95s] <warning>Package symfony/inflector is abandoned, you should avoid using it. Use EnglishInflector from the String component instead.</warning>
[20.9MiB/1.95s] <warning>Package symfony/swiftmailer-bundle is abandoned, you should avoid using it. Use symfony/mailer instead.</warning>
[20.9MiB/1.95s] <warning>Package twig/extensions is abandoned, you should avoid using it. No replacement was suggested.</warning>
[20.9MiB/1.95s] <warning>Package fzaninotto/faker is abandoned, you should avoid using it. No replacement was suggested.</warning>
[20.9MiB/1.95s] Generating optimized autoload files
[38.0MiB/4.11s] <warning>Class Eccube\Entity\Customer located in ./app/proxy/entity/src/Eccube/Entity/Customer.php does not comply with psr-4 autoloading standard. Skipping.</warning>
[38.0MiB/4.12s] <warning>Class Eccube\Entity\Order located in ./app/proxy/entity/src/Eccube/Entity/Order.php does not comply with psr-4 autoloading standard. Skipping.</warning>
[38.0MiB/4.12s] <warning>Class Eccube\Entity\ProductClass located in ./app/proxy/entity/src/Eccube/Entity/ProductClass.php does not comply with psr-4 autoloading standard. Skipping.</warning>
[26.1MiB/4.69s] 103 packages you are using are looking for funding.
[26.1MiB/4.69s] Use the `composer fund` command to find out more!
[26.1MiB/4.69s] Memory usage: 26.08MiB (peak: 60.05MiB), time: 4.69s