Purchased - PRO SELLER membership

Hello dear Rolan. I bought the status "PRO SELLER" for $ 100.

Then I clicked on the "Activate Your Order" button.

But I do not understand what name of the seller you need to write where the red arrow is. Here is a screenshot https://i.paste.pics/2d83422c403a57c42d65ca2909f9777f.png

Could you upgrade my account to "PRO SELLER" status or not?

Here is a link to a successful payment Order Confirmation - PlayerUp Middleman Service

 

You probably did not understand me. There you need to fill in the seller. Otherwise, I can not go to step 2

But I do not know how to fill in the "Sellers Username" field

Here is a screenshot https://i.paste.pics/2d83422c403a57c42d65ca2909f9777f.png

I have already paid $ 100 for the status of "PRO SELLER". But my account has not yet been updated.

Here is a link to a successful payment Order Confirmation - PlayerUp Middleman Service

Dear Rolan, help me please.