Fundrising big problems

Hi I have a problem with the plugin "Frundising" I bought a few days ago. I created in audivio.tv a crowdfunding campaign. (audivio.tv / proyectos / 702) I threw api code following the video instructions youtube. But when I try and select the amount to donate leads me to audivio.tv / proyectos / pledge and tell me that does not exist (404 error). What I can do? thanks