Sorry for the inconvinence caused.
Would you please try to update it after a few minutes, if you still are unable to update Backuply.
Then please create a ticket https://softaculous.deskuss.com/open.php?topicId=17 here we will be able to securely share with you more details on how to update Backuply.
Or you can directly download the latest version from Softaculous Client for your license and upload it to your WordPress site.