Good Day!
I’ll be managing 24 Mikrotik routers behind NAT but as of this moment I can’t seem to make a single router work as I’m encountering an error at the Cloud menu : “DDNS service might not work”. Do forgive me for being naive as I had only took MT101. 
Thank You
I get the same warning. It generally doesn’t cause an issue, it just means the IP the IP Cloud service discovered isn’t directly attached to the router. This is normal for NAT.
Do you know the IP(s) you are NATed behind?
Do you mean my public IP? If so, yes I do know. I’m really having problems setting up the remote management via DNS when I’m behind my s*itty router. 
I’m in dire need of help regarding this problem. 
What exactly is the problem? IP Cloud may give you a warning, but so long as the DNS entry is correct, it doesn’t matter.