[Unanswered]  3.Style issue

I had no trouble of purchasing bey parts or beys from 3.style on Ebay; however, I came across some issues with trying to purchase from them. I had tried to add a product from them into my shopping cart (from the app) but for some reason, its giving me the 9999 error. Its only them because I have tried adding other stuff beside them and have no issues whatsoever. So I tried adding from the laptop, but this time, it said that I do not meet their requirement of purchasing from them. I tried contacting them on ebay (laptop), but it said that they are not available of getting any messages. I have tried contacting them on Instagram and on the app beforehand, but no response. Has anyone gotten this issue as well?