Are you getting an error or is it a blank screen?
Please try the following steps to see if it will allow you to proceed with your filing:
If none of the above steps resolve the issue, please reach back out here in the thread and someone will follow up with the next steps.
...or are you entering the employer ID on the very first page...the one that searches for a download?
IF that is the case...Don't put in his employer's ID on that first page.
Hit the "Change how I enter my form" instead, and go thru the steps after that to manually enter his data.