How tu use DISCOGS RELEASE search with Mp3Tag?

Anyone can help me?

I already tried this, but both (Release/ID searches) doesnt work:
[WS] Discogs Album search + VA

I get an error:

And by the way:
When i try that, the search field is blank or when i try amazon, only the interpreter is taken.
All my mp3s look like this:
"Abba - Dancing Queen".
How can i change that, that the search field will automatically take interpreter and title ?!

Thx!