Impossible upgrade from Sierra to High Sierra
Hello,
i'm French sorry for my english.
I am owner of imac 2010 who is compatible with High Sierra.
My actual version of macOS is 10.12.6 (Sierra) and i'm trying tu update to 10.13 (High Sierra)
I tried to do it with this link :
https://support.apple.com/fr-fr/HT208969
but when i want to download mac os high Sierra (step 4), Itunes is opening and i can read
"The item you are looking for is currently not available in the Store“
I can't either download it on the Appstore.
What can i do?