Unable to turn on firewall

[#1]

I had an alert on my iPhone about the safety of the wifi I use at home.
Standard broadband from PlusNet, I’ve tried to turn on the firewall to low as it is currently set to off, an it won’t turn on. Only comes back with an error message,
Help anyone?

[#2 · Accepted solution]

Leave your firewall alone, it's an iPhone problem. 

If you drop the Wi-Fi then connect again it should go away.

[#3]

Many thanks I’ll give that a go

[#4]

Yep, forgot and re logged in and it’s fine now!!
Thank you for an easy fix!!!