Hi, thank you for your reply and help.
I've tried to update DTRegister. When you access the DTInvoice component (admin) then a fatal error occurs (see below for the stack trace).
For the profile setting (fields), we use Community Builder for that. The problem we have is that the Billing info in the event-registration process are ignored.
For the release today we unfortunately have to simplify the registration fields. So we will remove our own custom "billing fields" in the registration form, and we will remove your "step 2" billing fields when end-users select to pay with Mollie. Both are inaccessible/unused nor displayed on the invoice. Secondly we need to merge the separate streetname and housenumber custom fields into a single address field in the Joomla database. Else the invoice misses the housenumber.
Best regards,
Ruben Waitz
Fatal error: Cannot declare class DtinvoiceHelper, because the name is already in use in /home/schlrndstd/domains/scholingrandstadwest.nl/public_html/preview/administrator/components/com_dtinvoice/helpers/dtinvoice.php on line 16
Call Stack
Time Memory Function Location
1 0.2006 411616 {main}( ) .../index.php:0
2 0.2717 5940184 Joomla\CMS\Application\AdministratorApplication->execute( ) .../index.php:51
3 0.2717 5940184 Joomla\CMS\Application\AdministratorApplication->doExecute( ) .../CMSApplication.php:196
4 0.4464 17269944 Joomla\CMS\Application\AdministratorApplication->dispatch( ) .../AdministratorApplication.php:159
5 0.4487 17357672 Joomla\CMS\Component\ComponentHelper::renderComponent( ) .../AdministratorApplication.php:101
6 0.4496 17364384 Joomla\CMS\Component\ComponentHelper::executeComponent( ) .../ComponentHelper.php:377
7 0.4498 17389960 require_once( '/home/schlrndstd/domains/scholingrandstadwest.nl/public_html/preview/administrator/components/com_dtinvoice/dtinvoice.php' ) .../ComponentHelper.php:402
8 0.4528 17530280 DtinvoiceController->execute( ) .../dtinvoice.php:70
9 0.4528 17530280 DtinvoiceController->display( ) .../BaseController.php:710
10 0.4530 17536408 require_once( '/home/schlrndstd/domains/scholingrandstadwest.nl/public_html/preview/administrator/components/com_dtinvoice/helpers/dtinvoice.php' ) .../controller.php:27