Dear Developers
We are glad to announce that the fallback of the Commerzbank PSD2 API is now live. The fallback solution is based upon access to account data and payment initiation via screenscraping using the end-customer interface.  
In order to gain access to our fallback via Browser please consider the followings steps.
1.     Access the portal via https://kunden.commerzbank.de:444. Please note that the fallback access via the standard port is prohibited. The expected response of the browser is the error message "SSL_ERROR_RX_CERTIFICATE_REQUIRED_ALERT"
2.     Install the productive elDA (QWAC) as a client certificate in your browser, for instance Firefox: Settings  → Privacy and Security → Certificates → Import
3.     Access the portal via https://kunden.commerzbank.de:444 again with the certificate installed in the browser and select certificate if required.
4.     After the TLS connection is established you can access the online portal and receive required data.
Please remember that the fallback is not designed for a permanent usage and has some functional limitations in comparison to the dedicated API.
Your PSD2 Support Team