R2 certified

Hello, 

Two questions if I were to apply here for my company

https://www.t-mobile.com/content/t-mobile/corporate/our-story/working-together/suppliers/supplier-registration-process.html

does it matter that it says suppliers ? Because we would be buying from the auction.

Also may I open account and if I have missing requirements, may I take time to get it ?

We need to be R2 certified correct?