Here are a few options for the description of the WordPress post_tag “LINE Pay刷卡失敗” in Traditional Chinese, ranging in detail and focus:

**Option 1: Concise & Clear**

> LINE Pay 刷卡時遇到問題的相關資訊，包括常見錯誤、解決方案及故障排除。

* **Translation:** Information related to issues encountered when using LINE Pay for payments, including common errors, solutions, and troubleshooting.

**Option 2: Slightly More Elaborated**

> 於 LINE Pay 刷卡支付時碰到的各種狀況。 包括交易失敗原因分析、常見的錯誤代碼說明、以及相關的故障排除技巧。

* **Translation:** Various situations encountered when making payments with LINE Pay. Includes analysis of transaction failure causes, explanations of common error codes, and related troubleshooting techniques.

**Option 3: Focusing on User Experience & Help**

> 在使用 LINE Pay 刷卡時遇到困難了嗎？這裡提供有關刷卡失敗的相關資訊、逐步指南以及尋求協助的建議，幫助您解決問題，順利完成支付。

* **Translation:** Having trouble using LINE Pay for payments? Here’s information related to card payment failures, step-by-step guides, and suggestions for seeking help to help you resolve issues and complete your payments successfully.

**Option 4: Emphasis on Troubleshooting**

> LINE Pay 刷卡失敗的各種狀況與解決方法。 針對常見錯誤、錯誤訊息、以及如何排除問題的步驟提供詳盡說明，幫助您順利解決支付問題。

* **Translation:** Various situations and solutions regarding LINE Pay card payment failures. Provides detailed explanations of common errors, error messages, and steps on how to resolve issues to help you successfully resolve payment problems.

**Recommendation:**

Choose the option that best reflects the content covered in the posts tagged with “LINE Pay刷卡失敗”.

* If the posts are focused on **technical troubleshooting**, Option 4 is best.
* If the posts are more **user-focused and provide user help**, Option 3 is a good choice.
* If the posts contain a wide range of information, including explanations and solutions, Option 2 is suitable.
* For a quick summary, choose Option 1.

Remember to be consistent with your descriptions across other tags and categories on your WordPress site. Also, use this same description when editing or adding a tag if needed.