Yes!
You can get Newsmax+ on Roku!
You just have to update your Roku.

Here’s how:

1. Go to your Roku home screen

2. Click Settings

3. Click System

4. Click Software Update

5. Click Check Now

Your Roku will download the new Newsmax app.

Now, just click on the Newsmax app and it will take you to the new Newsmax+, where you can
login.

Note:  The first time I got into Newsmax after the update, I got a solid grey screen.  But, I got out of it and got back in and then it popped up properly.