No settings for accounts available.
There are no settings for accounts possible. Only the general settings tab is visible. Se the screen print below.

The screen looks like Thunderbird version < 68. Maybe 60. In this older version you find the account settings at the account itself (right click at an account, choose properties, choose "Autoarchive settings")
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Same problem. thunderbird version 68.6.
@murrayhughes So you can see the general settings of the addon, but you do not see any accounts? (see http://brummolix.github.io/AutoarchiveReloaded/ how it should look like) Can you activate the extended logging and restart Thunderbird. Then open the error console (STRG + SHIFT + J). What kind of log entries do see there? At the beginning it should list your thunderbird accounts and also an information about the type (imap, pop3, etc)... Do you see any errors?