License not working

hello,

i bought Acrobat XI Pro,

registered and received a Serial.

I entered it, but it turned out it was not working (see right side of screenshot).

then I realized, that license was for Acrobat Pro DC.

so i installed Acrobat Pro DC, entered License, but it was also not working (see left side of the screenshot).

Which application should i now download that goes well with my license code?

Support ticket is Adobe ID