Hmm, I can't seem to revoke or add indieauth tokens. 
The error I'm getting is: 
[21-Jan-2020 23:24:21 UTC] PHP Notice:  Array to string conversion in /var/www/html/wp-includes/formatting.php on line 1115
[21-Jan-2020 23:26:39 UTC] IndieAuth Error: 401 invalid_token - Invalid access token {"error":"invalid_token","error_description":"Invalid access token"}