Well the download is already kind of region locked. I have my PC on english, live in germany. I disabled that websites are able to read language or region and I use a VPN. I have to manually choose the country I'm coming from before download.

If I chose english and europe I get the 2019 version.

The other day I was doing my mums PC (It doesn't have much blockades) and on it I could only download the 2018 version. There was no way to choose the country or whatever. I had to send her the install I downloaded in order to get her the new 2019 version.
So yea. Region lock.
No trial though.