Facebook Lead App does not load my forms.

Hello, within my eloqua app I am using Facebook Lead App to download facebook leads for eloqua. However, now I am having a problem, since the forms of my facebook page do not load in the CANVAS where I use the Facebook Lead App. The problem is that I have many registered forms and it seems that it takes a long time to load and the end it stays in white. From Facebook I have archived all the forms, but apparently Facebook Lead App continues to bring all the forms and since there are quite a few, the app does