I have created an account through WHM, but never had this issue. The error I get when I try to edit the zone is:
There were errors in the zone which have been highlighted below. Please manually correct these errors before trying to edit the zone.
; cPanel first:11.60.0.28 (update_time):1483209424 11.60.0.28: Cpanel::ZoneFile::VERSION:1.3 hostname:s132-148-23-168.secureserver.net latest:11.60.0.28
; Zone file for wonderlandsigns.com
$TTL 14400
@ 86400 IN SOA ns1.secureserver.net. info.. ( near 'info..': empty label
2016123101 ; serial, todays date+todays
3600 ; refresh, seconds
7200 ; retry, seconds
1209600 ; expire, seconds
86400 ) ; minimum, seconds
wonderlandsigns.com. 86400 IN NS ns1.secureserver.net.
wonderlandsigns.com. 86400 IN NS ns2.secureserver.net.
wonderlandsigns.com. IN A 132.148.23.168
wonderlandsigns.com. IN MX 0 wonderlandsigns.com.
mail IN CNAME wonderlandsigns.com.
www IN CNAME wonderlandsigns.com.
ftp IN CNAME wonderlandsigns.com.
How do I manually edit it to fix the issue?
You can do this with multiple ways such as using WinSCP OR Putty. Here is the simplest way doing it via WinSCP
WinSCP
Hope this helps!