I just registered and it did not require any documents. Not sure where these stories and accounts are coming from.
However, I did see in passing a plug-in for websites to link Parler to and it required some website admin expertise.
Mark
If you want to be “verified” Parler requires photos of: Front, Back of Driver’s License and a selfie.
https://parler.com/verification
Only “verified” parler users can message...
There are youtubes showing how to use Parler. Parler’s FAQ & Help stink.
https://www.youtube.com/results?search_query=how+does+parler+work
This is from july 2019
https://www.youtube.com/watch?v=YsDlXCmc9VE
happy navigating...