OpenVPN Custom Options greyed out

[TO2020]

Dear All

I have a pair of pfSense devices in a CARP setup running 2.5.2.
The Custom options box is greyed out and I am unable to type any info.
I am using MFA and read that it is recommended to add a Custom option of "reneg-sec 0" to the OpenVPN Server to avoid hourly re-authentication.

I also have a single standalone pfSense unit for testing, also running 2.5.2, and on this device I am able to add Custom options.

Does anyone know why this option is greyed out?

[TO2020]

@to2020 I managed to resolve this issue myself.
I came across this article https://redmine.pfsense.org/issues/9511

So even thought my regular login to my pfSense has access to "WebCfg - All pages" which is inherited from admins, it does not include the advanced options.
Looking at the permissions for the "admin" user itself, I see nothing different, but that user still has access to these advanced settings.