Authentication-of-WL6-9-not-possible

Hi,
As of today, I can no longer use the WL6.
I get the following information: You need to log in to continue using WL6.

Login error: Empty response to the request.
Registration required, exit.
I tried it three times.

I had this information for the last few days, but I was able to open the program afterwards.

Currently working with WL7 and WL6.

Best regards
Hans