Reopening as the issue is occurring again. I first observed it today trying to re-archive Robert A. Altman (with non-dead refs enabled). I was able to use the tool fine yesterday and nothing has changed about my account status. As before, an archive run that would make no difference does not return the issue (likely as no edit is attempted).
Feb 6 2021
Jan 24 2021
The issue seems to have resolved itself. I am able to use IABot again as of today.
Jan 21 2021
I commonly have "Add archives to all non-dead references (Optional)" activated. If you tested archiving Team17 without this, it will have not produced an error because no changes were made.
Aug 29 2020
Aug 28 2020
@Cyberpower678 The problem was a blacklisted URL previously in the article. MediaWiki prevented me from saving the edit archiving the site (via IABot), cf. spam filter log. I removed the link by hand and was then able to archive several links. IABot should be able to notify the user that the edit was blocked by MediaWiki.