POTUS is not the right account it appears. When I click through on the link you provided it takes me to an account created on Nov. 28, 2020. That account is called Donald Trump and has a green check.
However, the account appears to have gone active today. I followed but I hope I'm not duped. No harm if so.
Also, POTUS is an account that was setup in 2018 and isn't really active.
Parler usually sets aside accounts/names for VIPs so if DJT is indeed on Parler, it would be a verified account. They would probably match his twitter handle too, realDonaldTrump.
Here’s Eric Trump’s following list; https://www.parler.com/profile/EricTrump/following.
No Donald Trump. I would think if DJT was on Parler, his son would be following.
There’s a bunch of fake DJT accounts.
You want Trump maga 2024