No "More scripts"

I’m having trouble accessing “More Scripts…”. The popup window appears when I click it, but there’s basically nothing in the window, as you can see.

I found an old locked topic about a similar issue, and I followed up troubleshooting steps, but nothing changed.

Specifically I’m trying to install the Archive Group script, but I’m not able to access it. Any help would be appreciated. Thanks!

Which version of DEVONthink & macOS do you use? Does it work again after downloading the app from our website (DEVONtechnologies | Apps) and replacing the installed copy with the downloaded one?

You’re on DT3, I guess? If so, this kind of information is always useful for others.
In any case, you can try accessing the script via the left sidebar:

This is in DT4, though.

The extras are hosted on DEVONtechnologies’ servers. You might be unable to connect because of a missing security certificate. A blank Support Assistant window has been a symptom of this in other cases. See here: