SOA dns-cluster serial numbers do not match

Hello,

My problem would be:
the modification value is not updated and is always 1 on the slave machine.

M-SOAM -E- [bbgym.hu] SOA mismatch over UDP:
185.208.226.51: bbgym.hu. IN SOA ns2.pwhost1.hu. root.bbgym.hu. 2025051801 7200 3600 1209600 180
185.51.188.131: bbgym.hu. IN SOA ns1.pwhost1.hu. root.bbgym.hu. 2025051804 7200 3600 1209600 180

I have to retype it manually after every change.

there is no error message, what could be the problem?