Here's what I found. (Has a picture of the rally, shows his posts.) Posts now marked private.
"...in the middle of the night/early Thursday morning, an account appeared on Parler with the handle @Thepotus45, which purports to be “The Official Account of The 45th President of the United States.”
The account, which does not bear a Parler verification badge, has since been marked “private,” but cached versions of the posts are still accessible.
The first post reads “I just joined Parler! Looking forward to meeting everyone here.”
(post is archived)