attachments Files inHighend Main theme.

Demo files downloaded ok but attachments won’t download in Highend Main theme. No error message, just this message: “Please be patient while Highend Main Demo demo is being imported. This may take a few minutes.” Tried this multiple times and it doesn’t progress, even after leaving for 2 hours. All other files downloaded in minutes. Increased Memory Limit, PHP Time Limit, PHP Max Input Time, all other System Diagnostics at required levels.