It links to [1], which appears to be their meta "fill out a form" web page, but has specific fields for more information that differ from, say, their generic Internet Problem form [2].

[1] - https://consumercomplaints.fcc.gov/hc/en-us/requests/new?tic...

[2] - https://consumercomplaints.fcc.gov/hc/en-us/requests/new?tic...