Hi @asmecher
the problem of the redirection has been fixed, the problem was caused by the plugin SubscriptionSSO, it was set for any journal and it created a endless loop it wasn’t setup properly.
The problem is fixed once I disabled SubscriptionSSO or I set SubscriptionSSO propery
The message “A transaction error occurred…” is displaying for missing paypal keys, I am working on that right now.
Thanks for your suggestion anyway, (we can mark this case as solved if you want)