C:\Windows\Temp folder is getting filled up by ETILQS_xxx files.
ETILQS are temporary SQLITE database files which are there in the Windows temp folder and these files are created by a sqlite plugin to Firefox or other browser, not edpa.
If these files cannot be deleted, that means the files can have some open handles.
To check for handles on .*etilqs files, run Process Explorer and search for "etilqs"