Here are a few options for a WordPress post_tag description for the title “LINE Pay無法使用” in Traditional Chinese, varying slightly in emphasis and detail:

**Option 1 (Concise & General):**

> 關於LINE Pay無法正常使用的相關問題。包括付款失敗、交易錯誤等狀況，以及可能的解決方法。

**Translation:** “Regarding issues with LINE Pay not working properly. Includes situations like payment failures, transaction errors, and potential solutions.”

**Option 2 (More Specific, Suggesting Troubleshooting):**

> 詳細探討LINE Pay無法使用的原因和解決方案。 如果您遇到付款問題，請查閱我們的文章，了解常見問題、疑難排解步驟，以及如何聯繫客服協助。

**Translation:** “Detailed discussion of the causes of LINE Pay not working and solutions. If you’re experiencing payment issues, please check out our articles to learn about common problems, troubleshooting steps, and how to contact customer service for assistance.”

**Option 3 (Focusing on Troubleshooting & User Guidance):**

> LINE Pay無法使用 – 找出解決之道! 本標籤提供實用的指南，幫助您解決 LINE Pay 遇到的各種問題，例如付款被拒絕、設定錯誤等等，並提供逐步的教學和建議。

**Translation:** “LINE Pay Not Working – Find the Solution! This tag provides practical guides to help you resolve various issues you encounter with LINE Pay, such as rejected payments, setup errors, and more, along with step-by-step tutorials and recommendations.”

**Option 4 (Slightly Broader, Addressing Potential Issues):**

> 針對LINE Pay無法使用提供的資訊。 涵蓋可能導致問題的原因，例如系統維護、帳戶狀態或其他與支付相關的故障。 幫助您快速解決LINE Pay的相關困擾。

**Translation:** “Information provided regarding LINE Pay not working. Covers possible causes of the issue, such as system maintenance, account status, or other payment-related failures. Helps you quickly resolve your LINE Pay troubles.”

**Which one to choose?**

* **Choose Option 1** if you just want a general overview for the tag.
* **Choose Option 2 or 3** if you have a more detailed post focusing on troubleshooting and user help.
* **Choose Option 4** if you want to encompass a wider range of potential problems, beyond what the user is experiencing.

Remember to select the description that best reflects the *content* of the posts you’ll be tagging with “LINE Pay無法使用”. Good luck!