You will not receive any confirmation of your delay compensation request, but I know from personal experience that it works. For me it took some weeks to get the compensation I was entitled to. 

As only compensation over a certain amount is paid it is best to wait until you have finished the whole trip before you request the delay compensation as you then can request compensation for all delayed trains at the same time.

Hidden somewhere-but with some patiece can find it-is also a list to what you are entitled to-this is based on the cost/day of the pass you use-and there is also a lower limit of 4€-if it is below that sum, no money back-except if you have managed to have a few of those and combine them

There used to be a “Thank you” screen after submitting the delay compensation request and we are currently looking into implementing it again. As a side note I can confirm that we have received your claim in good order and will process it asap ;)

Thank you for your response.

I understand that you say you have received my message.
I would like to know for sure whether you are talking about the message, with the DB Bahn train that was canceled between Cologne - Brussels on September 1?