My all subdomain stopped working. How to resolve ?

I use zapnel. All subdomain was working fine before. But recently my expired and after renewal my all subdomain stopped working. Here is my DO Zone File.

$TTL 1800 IN SOA 1447083596 10800 3600 604800 1800 1800 IN NS 1800 IN NS 1800 IN NS 1800 IN A 1800 IN A 1800 IN CNAME
* 1800 IN CNAME 1800 IN CNAME 1800 IN CNAME 1800 IN A

Please help me to resolve the issue. Note: my domain is properly indicated to DO nameservers. Check here

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These subdomains all appear to be working properly. If your domain previously expired you may have cached DNS results from this time on your local system that are preventing it from resolving properly.