Leaderboard

WHMCS plays very loose with their data, so sometimes there is no data when data is expected and required and it results in an error. Check your WHMCS database to make sure all clients/contacts have a client ID. The subsequent errors are likely a result of the first. If you need help, and are willing to securely share a dump of your WHMCS database, we can attempt the import here and debug any issues and either update the importer to work for you, or send you a fresh Blesta database with your imported data. We delete all data when we are finished.

Yeah, haven't seen him in here in a bit. I figured I'd get him to answer here instead of creating a ticket, which looks like I will have to do anyway. Thanks, I'll report back.

You could manage each individual service and UNSELECT 'Use Module' while removing the service to remove without using API (i.e remove just from Blesta side). Once there are no active services / invoices you should be able to remove the client as expected

Maybe someone will be interested - ISPAPI Registrar Module for BLESTA: https://wiki.hexonet.net/wiki/Blesta_Modules