Dainty - Heart Button Settings
I Recommend This Plugin Settings
This plugin adds the heart/like button on the posts. Here is how I set it up for the Dainty theme. Make sure the I Recommend This plugin is installed & activated. Once activated, go to Settings > I Recommend This and adjust your settings to match mine:
WP-Ulike Settings (old Dainty version)
Older Dainty versions use the WP-Ulike Plugin. Here are the general settings: