Meanwhile, Novalnet sticks to the basic conventions of Magento extension programming. And in general, all features of the extension work pretty well. Hopefully, though, you will never have to customize the spaghetti code callback script, which is used to notify Magento of bookbacks and so on. Also, the german locale csv file is far from being helpful. It looks like somebody just used google translate and afterwards randomly spread some commas and double quotes on the result.
If you have an old version of the Novalnet extension, you will have to manually (code and db) remove the old version in order to successfully install the new version. Hopefully, this is not going to be necessary at future (major) versions as well.
The Germany based support is helpful, and reacts quickly. It looks like, besides all difficulties, Novalnet is serious about further developing this extension to support their payment services.
March 14, 2014
Best payment extention
Works great with Magento 184.108.40.206. Best solution to provide credit card payment method without spending much money. Excellent support!
February 13, 2014
Finally set up your payment module. Big thank to guys from technique department and support.
Everything works fine till now...:-)
November 20, 2013
I am using this on a site here in Germany. Had a few problems with the module, but customer support has been outstanding. In the end they helped me understand, that the problems I had were with another extension. As I said, the customer support is great.
September 29, 2012