Macro for Chiran Zabran's Tempest is not working

As title, /equip "Main Hand" "Chiran Zabran's Tempest" is not working.
Cannot switch to WHM. Have to do it manually.

ISP: Streamyx
Type of Internet Connection: DSL
Internet Connection Speed: 1Mb
Date & Time: 10 AM GMT +8
Frequency: Just discovered during the above-mentioned time
Character Name: Vickyle Eyn
Race: Hyur
World: Balmung
Class/Skill Rank: White Mage
Area and Coordinates: Aleport (12, 23)
Party or Solo: Party
NPC Name:
Monster Name:
In-Game Time:
Steps:

Greetings, Eyn!

Thank you for posting your concerns about the issues you are experiencing with your /equip macro. I have made sure to submit all of your information to the development team, and they will thoroughly investigate this matter, based on your report. Unfortunately, I cannot guarantee that a direct response will be posted on your thread, but I do recommend checking here or here for any details regarding the development team's investigation. Thanks again for your report!