Can't add a server

Whenever I try to add a server, I get the following error message:

* user warning: Unknown column 'folder_prefix' in 'field list' query: INSERT INTO mail_api_servers ( `protocol`, `protocol_module`, `hostname`, `port`, `encryption`, `domain`, `folder_prefix`, `hide_folder_prefix`, `inbox_folder`, `trash_folder`, `sent_folder`, `drafts_folder`, `outbox_folder`, `options`, `login_suffix` ) VALUES ( "", "", "localhost", 143, "None", "", "", 0, "INBOX", "Trash", "Sent", "Drafts", "", "/notls", "" ) in C:\xampp\htdocs\site_name\sites\all\modules\mail_api\mail_api.admin.inc on line 759.
* user warning: Unknown column 'suspended' in 'where clause' query: SELECT * FROM mail_api_servers WHERE suspended=0 in C:\xampp\htdocs\site_name\sites\all\modules\mail_api\mail_api.hooks.inc on line 103.