Sorry for the inconvenience. We informed the sales guys to get aback to you asap.
Regarding the payment I could not help you, I'm sorry.
The second point, on the other hand, is easy to answer. You can move your i-doit instance as often as you like. As long as you follow the system requirements, there is nothing to stop you. We also provide instructions for moving an instance in our knowledge base. -> https://kb.i-doit.com/pages/viewpage.action?pageId=66355511