Thank U, Next (Single) is now the highest certified Song:

Question

Ariana Grande's biggest hit here ​thank u, next, Is now the highest certified song in the history with its new 7x Platinum Plaque, surpassing Ariana Grande's itself no tears left to cry as the best selling single SPS. 

But, ME! by Taylor Swift is predicated to outsell thank u, next in the upcoming weeks or months. 

thank u, next is also the 2nd best selling single in Pure Sales (Behind "ME!" by Taylor Swift).

Answer 1

Update: no tears left to cry surpassed thank u, next and it's now, once again, the best selling single ever.