Subscribe2 (version 2.2.2) and Fold Page List interaction problem

I use Skippy’s Subscribe2 and Fold Page List plugins and, alone, both work fine.

But, when a subscribing user clicks on the confirm link (in the confirmation e-mail) and Subscriber2 shows its confirmation page, my other pages’ titles are temporarily changed (on the sidebar) to Subscriber2 confirmation page’s title.
Picture:
https://img55.imageshack.us/img55/2738/subscriber2error9ke.png

How can I avoid it?

The subscribing page is:
https://www.jlcarneiro.com/notify-list

The confirmation page is:
https://www.jlcarneiro.com/?s2=187a563545ef7f26998d513662a5cdb8814