I searched all the whmcs tables and emptied the following which did not have a valid userid
tbloauthserver_access_tokens
tbloauthserver_clients
the same error message is still displayed, only customers and invoices are imported.
I am a little disappointed that there is no feedback here ...
I was able to import everything from whmcs in a wisecp installation (except for cancellations & domains price list).
When will these problems be fixed in the blesta import script?