Probelm after trying to hack my Nokia phone using HelloOX2. Help!?

[Coty]

I donated $5 to the HelloOX2 team/website for them to sign the app for me to install to my phone so i can hack my phone. I have a Nokia 6790 Surge on Straight Talk network. I installed HelloOX2 with no problem, i opened the app on my phone, it went through the process of hacking (Mapping drive, activating file system, unmapping drive, installing root cert, installing RomPatcher+, etc), it said it hacked succesfully. So i tried installing an unsigned app. It didnt work. It gave me an error "Certificate error. Contact the application supplier" and "Unable to install a protected application from untrusted supplier". So why isnt it letting me do this since 'supposedly' it hacked my phone. And it said it installed RomPatcher+, but no such app shows up in My Applications, Applications, nor Applications/Installations. Can someone please help me?!? Im so frustrated because i paid for this and it said my phone model was supported, but it didnt do what they said. Any help would be much appreciated. P.S. I tried rebooting, running the hack multiple times, selecting the unhack my phone option but it just stays on the "uninstalling root cert" popup for hours.