I’ve got similar reports about this too with more details.
So it seems that co.zw is being really picky about nameservers. They say that the configured nameservers MUST return the same records in the NS record response or it’s considered “misconfigured”.
Looking at the official standards, our nameservers are technically not setup correctly. However, I have never seen this configuration ever cause any problems for anyone. Only picky domain checkers complain about this.
But this is the first time the picky domain checkers do more than complain.
I’ll see if this is something that can be adjusted on our end. But I can’t make any guarantees about whether this will be corrected at all or whether it will be corrected before Sunday.
In the mean time, you could switch your domain to third party nameservers which do not have this issue. Many people here use Cloudflare for this: