On the sidebar when attempting to switch back to dashboard from event I accidentally turned off the "Other" section and now can not kiss back. How can I turn this feature back on please?

Unfortunately once you close that you can't get it back :( Once you get a new kiss the new one will show up again, but the old ones are lost.

Have received more Candy Hearts but the Kisses are not showing up still.

EDIT. The section just came back, thank you!

Click the little arrow in the top right of the section to expand it if it's still showing the title on your sidebar and just not the events themselves