Solved New Install - No sample data and no editor

Just starting to learn the interface I have installed and reinstalled the latest build for Joomla 4 (Beta 6)

When I install I can see the button on the dashboard but nothing happens when I click it. 

When I try to create a post I can type in the subject line but then there is no editor to enter the body of the post.

Is there a production version that works with Joomla 4? 

When I try to create a post I can type in the subject line but then there is no editor to enter the body of the post.

Where, you see a subject line if you don't have sample data installed? Please read this:  docs.kunena.org/en/basics/installation/installation-k6-0

I have installed Kunena 6 onto two different Joomla 4 test sites.
As per the instructions I was able to add the admin module with sample data to one of them. ( I have used Joomla for 10+ years and never before had to add a module to the back end so this was not obvious )

On the second site, when I try to add the sample data nothing happens. I mean the module never appears. (whatever)

Test data or not - I still can not create a new topic on the site with the test data. I get the button to create the topic, I get the text box for the subject line but I do not get the text box for the actual post. Is it likely that this is just because I need to learn & tweak additional user and category settings? It is a rough start so far.

My question

Ideas????

Kunena does not install a module for its sample data. You have this problem with both test pages? If you have installed Kunena + sample data + created Kunena menu, it is ready to use.
If you don't have an editor, that's a different problem. What Joomla template are you using? Is it a new Joomla installation or an updated site?

It is not a new install of Joomla. It is up to date - a restored copy of my production site that originated with Joomla 2.5 ten + years ago. 

As for the site template, I am using the current version of Isotope from RocketTheme - (Gantry 5). Do I need to use a Kunena specific template for basic functionality????

Between the two sites, one of them let me install the sample data as prescribed. IDK what is wrong with the other but I think that is a different issue.

See attachment. You will see there is no editor window. 

Do I need to use a Kunena specific template for basic functionality????

No, but conflicts with extensions can always occur. This can be templates, optimization tools or another extensions. Also, scripts or CSS codes sometimes cause problems. But most conflicts can be fixed if you know the cause.
Change to the Joomla Standardtemlate and check if the error is gone. Or if you have a page optimization tool, disable it and test the editor.