Hi guys,
Finally I solved it by myself.
1. Login cPANEL > File Manager > Web Root (public_html/www) > click Go.
2. Click ‘New File’ on the toolbar.
3. Create new file php.ini.
4. Open the new php.ini file with Notepad and fill with
allow_url_fopen = 1;
5. To make this php.ini file readable by subdirectory, open the file .htaccess file from public_html folder and add these on the last row
<IfModule mod_suphp.c>
suPHP_ConfigPath /home/USERNAME/public_html
</IfModule>
6. Change USERNAME with your hosting username.
7. Done, your Plugins back to normal.
Good luck!