Error 8518 over API call.

Error 8518 over API call.

Hi I have a working setup for updating data over the API, but for a specific account I got a 8518 error.

After a mistake from my side   https://help.zoho.com/portal/community/topic/7005-error-on-importdataasstring-request my setup works for the account with email address: fl**is@a**m.nl

But i'm not able to get it to work for the account with email info@c**.nl where I  receive the 8518 error code.

My configuration: 
  1. email: info@c**.nl
  2. token: 56a3************************b09a
  3. token generated with url: https://accounts.zoho.eu/apiauthtoken/create?SCOPE=ZohoReports%2Freportsapi
  4. There is only one workspace and one table for that account.
  5. This workspace is owned by the user: info@c**.nl
A part of the PHP code (which works for the other account fl**is@a**m.nl):
  1. $uri = $report_client_request->getURI($email_id, $db_name, $table_name);
    $import_type = "UPDATEADD";
    $auto_identify = "TRUE";
    $on_error = "ABORT";
    $config = [
      "ZOHO_MATCHING_COLUMNS" => "Name of Column",
    ];

    $report_client_request->importDataAsString($uri, $import_type, $data, $auto_identify, $on_error, $config);
Some info about the error:
  1. error_code: 8518
  2. error_message: You need to (re)login to perform this operation
  3. HTTP_status_code: 400
  4. From line 1368 on ReportClient.php
Please can you tell me wat I'm missing or what goes wrong when importing to the account info@c**.nl