Hi Mr B,
1.) I need a link to say something to the not authorized message - this is not the default behavior.
The email in the organizers profile is not overwriting the joomla users one, this is never wanted that way (see tooltip). It was planned to just show that address in the frontend, but i never implemented that..
So probably going to remove it anyway.
2.) Yep this is a known issue. The payment plugins are not provided by use (at least most of them are not - we wrote 3 which don't have this issue(except one)). But i have it on my todo-list .. Makes updates for us harder..
3.) The paypal plugin supports just successful callbacks, nothing else (except cancellation), so refunding is currently not integrated. As i said above, it's not written by us. With Matukio 6 there will be a big review of the existing payment plugins.. and maybe i rewrite the important ones like paypal myself.. :/
4.) The placeholder is BLZ
E.g. just create a language override for that..
Cheers,
Yves