Not only that you have now installed a hack, this has not really rooted your phone. All you did was install a superuser firewall and gained partial OS level root via a "undisclosed" method.
No one even knows how this team gains root, the apk installs the firewall and calls a remote binary which is what actually executes the hack to gain this user level root. Congrats you have a mini root but you have absolutely no idea what the app did to get there.
I'd reflash the stock rom and get whatever junk this app dumped on your phone out and do the proper Toast root with full nand-unlocking.