Black lion trading issues??
Most times, a client restart fixes these issues, but maybe we coud fix it without that. Try this please and let me know if it happens to work for you:
1. Open your trading post
2. One your options panel
3. Change the language to French
4. Wait for the trading post to reload in French
5. Change the language back to English (anglais)
6. Test trading post
Please post back if that helped or not.