how to log in in Digital Editions?

I have Adobe ID and PW. I just login with my Google ID at Adobe.com.

I bought the e-book. It can be read in Adobe Digital Edition.

I downloaded Adobe Digital Edition. However, I cannot see the e-book that I bought.

The e-book company says I can use my Adobe ID and PW, and authorize.

I do not find any way to authorize, or login. Therefore, I cannot see e-book.

Do you know how?

The screenshots are here, and the one with Adobe Digital Edition shows just pdf files, it is not e-book that I want to see.