DNS Change error

So i signed up here to get a new Website,
i already own a domain and wanted to use it of course.

So i went to my Domain Vendor to Change the nameservers (which are diffrent in the Panel and the FAQ)
but when i try to change the DNS Settings i get the following message:

NS0068: Server 198.251.86.152 did not return alleged nameserver "ns1.epizy.com" for domain "maidcafe.at".

What am i supposedto do here?

A good place to start in case of any errors is to check the knowledge base. For example, this issue sounds similar to what has been described here: https://infinityfree.net/support/unable-to-set-nameservers-dns-query-refused/

Nope doesn't Help, my registrar is Nic.at which is the Austrian NIC...

sandschi said:
Nope doesn't Help, my registrar is Nic.at which is the Austrian NIC...

I'm sorry, but I don't know that registrar.

But, judging by the error message, the issue is the same. The error message implies that your registrar checks our nameservers to see if your domain name is already configured. Which is obviously isn't, because you need to change the nameservers because you can setup the domain name with us.