Ok. Here’s another link that seems better explained.
https://public.pocketnow.com/truth-social-how-install-register-download
I no longer use a PC but people have been getting on using one.
There is still a waiting list for now.
Maybe they are full for today. The truthsocial.com page does not show the Join the Waiting List! area for entering your username and password. I’ll keep checking back. Thanks