I checked epiz_33074720 and was able to create files there without any issues.
However, I only tested the htdocs folder, which does not seem to have any files uploaded yet. You do appear to have files uploaded outside of the htdocs folder. This is not supposed to be possible, but was possible, for a time. But it seems that this issue was fixed now.
Please remember that we provide a website hosting service, and that any files located outside of your htdocs folders are unreachable to your website. So there is no reason to ever create or upload any files outside the htdocs folders for any legitimate use case. And uploading files for document/file/media backup/storage/sharing is not a legitimate use case.