WotLK Unable to Purchase Skinned Whelp Shoulders on Blackrock

[Flickblz]

Hello, my character on the Blackrock server has reached a rating of 1850 in 3vs3 solo queue. I need to purchase the Skinned Whelp Shoulders (Heroic, 264 item level) which requires a rating of 1850 in either 3v3 or 5v5. The icon is already lit up, indicating it's available for purchase, but when I right-click it, it prompts me that I haven't reached the required rank. Why is this happening? Warmane team, if you see this message, please help me!

[Shred92]

Solo queue doesn't count as 3v3. You need to play actual 3v3 arenas with a team to buy that gear.

[Flickblz]

Then I've played for nothing!