Here are a few options for the description of the WordPress post_tag “行動支付問題” (Action Payment Problems) in Traditional Chinese, ranging from concise to slightly more descriptive:

**Option 1: Concise**

* **行動支付相關疑難雜症、常見問題及解決方案。** (Action payment related troubles, common questions and solutions.)

**Option 2: Slightly More Descriptive**

* **關於行動支付的各種問題：使用疑慮、交易故障、安全風險，以及如何應對。** (Various problems concerning action payment: usage concerns, transaction failures, security risks, and how to respond.)

**Option 3: Focusing on Troubleshooting**

* **整合行動支付使用時遇到的困擾，例如付款失敗、帳戶安全等問題，並提供實用的解決方式和建議。** (Integrating the problems encountered when using action payment, such as payment failures, account security, and providing practical solutions and suggestions.)

**Option 4: Broader Perspective**

* **深入探討行動支付的各種困境，包括技術限制、用戶體驗、商家應用等方面，以及對未來行動支付發展的思考。** (In-depth discussion of problems with action payment, including technical limitations, user experience, merchant applications, etc., as well as thoughts on the future development of action payment.)

**How to choose the best option:**

* **Consider the scope of your posts:** If you primarily focus on troubleshooting common issues, Option 3 is great. If your content is broader, Option 2 would be suitable.
* **Target audience:** Is your audience tech-savvy, or do you need to be more accessible? Option 2 is easier to understand than Option 4.
* **SEO:** Consider adding keywords related to your content. The more specific it is, the better it will be to attract the right users.

When you enter this in WordPress, you would ideally choose the one that resonates most with the blog content that will be in that specific tag. The description will help users browse and understand the content better. Choose the one that is best fit for your content.