Cannot add order form

[Mr.Bungle]

This is my first go at Blesta, and I am starting with V5 beta.
Reason is that for European B2B business a system that doesn't understand VIES is completely useless, that's why I never looked at Blesta up to V4. So I was happy the Beta offers this now and I won't have to give WHMCS another try. Which would fail. Again
That said, I have no experience with V4 and I do not know if this bug is related to V5 only:

I set up company, clients and a package with the plesk plugin.
Now I want to create an order form.
The docs here https://docs.blesta.com/display/user/Order+System#OrderSystem-InstallingOrderSystem
say I should check if the order plugin is installed. (To enable the Order System widget, go to [Billing] > Overview, click the "Manage Widgets" link, and drag the Orders widget from the right to the left)
I did, and the Plugin is visible and it seems to be on the left side but there is no clear distinction between active and inactive state, see attachment.
Anyway, whichever way I drag it there is no menu entry for the forms, as opposed to the docs saying Once installed, a new link will appear under [Packages] > Order Forms, where order forms can be managed

Seems the plugin is not recognized or something.
Since an order form is quite crucial to the whole business - what is going wrong here? Am I doing something wrong?
Any chance for me to look for errors on mys side?

 

Thanks in advance! 
 

[Paul]

We chat in Discord about this, it appears that during installation the Order Manager plugin was not installed fully, it was missing some tables. The recommended solution was to re-install Blesta fresh and see if the Order Manager was installed correctly.