Here are a few options for descriptions for the WordPress post_tag “信用卡設定” (Credit Card Settings) in Traditional Chinese, catering to different levels of detail and focus:

**Option 1: Concise and Informative**

> 信用卡的基本設定與管理，包含新增、修改、刪除等功能，以及常見問題解答。
> (The basic settings and management of credit cards, including adding, modifying, and deleting, as well as answers to frequently asked questions.)

* **Why it works:** It’s clear, direct, and provides a good overview of what the tag covers.

**Option 2: More Detailed and User-Oriented**

> 關於您的信用卡所有設定，包含帳戶連結、消費通知、紅利點數設定、以及安全設定，讓您輕鬆掌握信用卡使用狀況。
> (All settings related to your credit cards, including account linking, spending notifications, rewards points settings, and security settings, allowing you to easily manage your credit card usage.)

* **Why it works:** It’s more user-focused and highlights the benefits of managing credit card settings.

**Option 3: Focus on Troubleshooting**

> 信用卡設定相關的問題與解決方案，如帳戶綁定失敗、交易警示設定、以及信用卡的安全設定流程。
> (Problems and solutions related to credit card settings, such as account binding failures, transaction alerts settings, and the credit card security setup process.)

* **Why it works:** Suitable if your content focuses on troubleshooting common setup issues.

**Option 4: Simple and General**

> 管理您的信用卡帳戶與設定。
> (Manage your credit card accounts and settings.)

* **Why it works:** Short, easy to understand, suitable for general tagging.

**Option 5: Including Keywords (for SEO)**

> 信用卡設定，包含新增信用卡、修改信用卡資料、設定消費通知、管理信用額度、以及信用卡安全設定教學，幫助您安全、便捷地使用信用卡。
> (Credit card settings, including adding credit cards, modifying credit card information, setting spending notifications, managing credit limits, and credit card security settings tutorials, helping you use your credit card safely and conveniently.)

* **Why it works:** This option includes relevant keywords, which can help improve search engine optimization (SEO) for your tag. It’s good for ensuring that people find your content.

**How to Choose:**

* **Consider your content:** Choose the description that best reflects the type of content you’ll be tagging with “信用卡設定.”
* **Keep it concise:** WordPress tag descriptions should be relatively short and to the point.
* **Use keywords:** If appropriate, include relevant keywords to improve searchability.
* **Think about your audience:** Use language that is clear and easy to understand for your target readers.

I recommend starting with **Option 1 or Option 2**, depending on whether your content is more basic or focuses on user benefits. If security and troubleshooting are major focus points, consider Option 3. And of course, go for **Option 5** if you are prioritizing SEO.