Hey. I tried every 4 hours waiting 10 minutes for three days long until I gave up. I ordered a server, it was up within an hour. Only then I notice rdns is a "Premium feature" for which you need to pay extra. I decided to order an extra IP (they state 1 EUR) but they charged me 4.50. 2 days after opening a support ticket they told me my next billing month will have a 3.50 reduction. The next month didn't have this reduction, it was quite clear for me they are unorganized and I asked them to suspend the server.
I really don't recommend them.