Clear database for user and reupload everything

Probably, you have some file permission error on your server. Anyway, if you have only one user, just setup a fresh installation and copy all your files data folder of your user. After that, use occ files:scan command. Here is the doc: https://doc.owncloud.org/server/10.0/admin_manual/configuration/server/occ_command.html#file-operations