Demo upload, file empty

I am opening a new ticket, we had added the problems here before https://hb-themes.com/forum/all/topic/increased-max_execution-time-still-taking-forever-to-save/

We get the empty file error uploading the xml demo file, or the zero uploaded message if we click on activating any demo. I cant find the .ini file on the server. We have been trying for 36 hours now to fix the issue. We would really appreciate your help.
Regards BvH –