It said nothing. Regarding the requirements, I don't think I cover them, but the prompt to install 11 has been sitting on my computer for a long time now, and actually the second attempt was successful. Now there is a second attempt to update the already installed 11 because the first one failed again too lol.
A second attempt doesn't bother me as much as an absolute inability to do so. So it remains to be seen how things will develop in the future.