Need help with DNS settings, can you help?

Question

Domain Name System

Dear help to understand, there is a domain registered on the site Reg.ru there is a virtual server bought by simplecloud.
Now a question. I delegate the domain to simplecloud, there are 2 NS
. Further, records of the type are automatically generated in their panel.
And after that I add the domain already to the ispManagera panel and here again my settings are generated here, too.
Where the red arrow there were entries NS1.EXAMPLE.RU and NS2.EXAMPLE.RU I just changed them to simplecloud, because I think it’s abnormal that there are examples inserted.
And now, please tell me, what kind of heaps, how to do it right, this time and the second, my site won’t die by chance tomorrow? from the fact that there is such a confusion in NS
And I also noticed this. when checking DNS records ANY here xseo.in/dig,it shows me 2 different options all the time))
That's right

Answer 1

to calm down
viewdns.info/dnsreport/?domain=goldident.ru
times green - like everything is right
in short - A record - an indication from which address to request a domain
from you everything is good
MX - if you set up on Yandex - figure it out if there are two mx servers - ttl is usually different
well and SOA xs why sticky