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Please clarify whether you are trying to print the Submission's PDF or the Fillable PDF version of the form.
For the Submission's PDF, I can download one from your form without any issues. The file is not corrupted and the data is there.
As for the Fillable PDF, unfortunately, long forms won't be converted to PDF or they would be erratically converted so some forms might work and some not.
Our developers are very aware of this, but there is not a time frame for when this will be fixed. Or if they would decide to restrict converting long webforms to fillable PDF or set the restriction to certain type/number of fields.
Please read this general guide to know more about fillable PDF forms: