The Hosted Logon Self-service site / portal has a function to enable an account to be unlocked.
Go to the following website and then select the Unlock Account option:
https://changemypassword.accessacloud.com
If that does not resolve it for you, then our support team will need to investigate, run scripts or liaise with the hosting or development teams. Any Issues with contacting us, please see the following Get support in Dimensions.
