so here's the thing : our office unable to access any http sites from our router internet, turns out it's because a rule in web proxy access.
so the first thing i do is to delete the web proxy access rule,after that we able to access the http sites again but the web proxy access rule will comes back a few minutes later and mess it up again.
so i tried to disable the web proxy completely and delete a rule in firewall > NAT, and the same thing happens again (able to access all http sites until the rule comes back)

why is this happen ? why the deleted rule keeps comming back ? please help, im absolutely clueless about what to do with this issue

also please pardon my potato english