The language of English souce file disappear from toolbar

Question

I just moved my license for Trados 2022 to a new computer. 
 After installing Trados 2022 and activating the license on my new computer, I found that the English source file had disappeared from the toolbar, as shown in the image below. 
 Trados keeps some Chinese files from my old computer, but the English source file has disappeared. 
 Could anybody help me? 
 Version information: Trados Studio 2022 Professional

Paul · Answer

Bella Hsu 
 I thought that was a good question and the answer might help others. Can you explain how you solved it, or how you got there in the first place?

Trados Studio > 1. Trados Studio

The language of English souce file disappear from toolbar