Thumbs and pictures not showing anymore

The problem is not with TimThumb, it’s with how you are calling TimThumb. Looking at your site, it is trying to load:

http://ovnihoje.com/wp-content/themes/channelpro/timthumb.php?src=http://i2.wp.com/ovnihoje.com/wp-content/uploads/2013/04/alien-greer.jpg?resize=269%2C80&h=80&w=269&a=t&zc=1

If you update the theme or TimThumb config to pass the correct parameters, it will work:

http://ovnihoje.com/wp-content/themes/channelpro/timthumb.php?src=http://ovnihoje.com/wp-content/uploads/2013/04/alien-greer.jpg&resize=269%2C80&h=80&w=269&a=t&zc=1

Since you recently migrated it’s likely that you have been pointing to the hold wp.com domain since you moved, and only now are the images no longer available on their server.