Issue Unable to Remove or Edit Firewall Rules

[APaterson71]

I have set up a firewall rule to block a particular number of IP addresses, and wanted to add a few more ranges. When I click on the rule all I can do is view it, I cannot add anything to the list. Also on the list of rules the tick box next to the rule is disabled so I cannot remove it (rules that were set up by the system do have the tick boxes active)

Any ideas as to what may be wrong?
Thanks

 

[Ehud]

possibly back up before

rm /opt/psa/var/modules/firewall/firewall-new.sh
rm /opt/psa/var/modules/firewall/safeact.confirm

and then apply and confirm only once at the end:
On first SSH:
/usr/local/psa/bin/modules/firewall/settings -a
On second SSH:
/usr/local/psa/bin/modules/firewall/settings -c