Error with Grandstream when edit a parameter

Hello, I’m working with mikrotik and grandstream devices and mikrotik works fine, but I have some problems with grandstream.

The device register correctly to the GenieACS server but when I edit some parameter or send a reboot to the GrandStream device I get an “No contact from device” error.

The tcpdump show the next

The connection request credentials work correctly because as the same that I use in the mikrotik

Can anyone help me?

You need it create input rule on MTik firewall dst.port 7547 accept

I test this in a LAN environment, the mikrotik are another device in the LAN, GrandStream are connected directly to the main switch like the GenieACS server, it isn’t the problem.

Maybe you can post more packets.