Intermittent connection issue affecting customers using NBI appointment portal

Hi everyone,

I’m hoping someone can point me in the right direction.

I’m managing a small wireless network with Cambium equipment for local customers. Recently, a few users started reporting that some government websites are unreliable on our network. The most common complaint is with the NBI appointment portal.

The page sometimes loads very slowly, gets stuck during login, or times out when they try to continue with their appointment. If they switch to mobile data, it works immediately, so they think the problem is on our network.

I’ve already checked signal quality, DNS settings, latency, and packet loss, and everything looks normal. Other websites and streaming services work fine.

Has anyone seen a similar issue with specific government websites? Are there any Cambium settings, MTU, DNS, IPv6, or firewall options that I should investigate first?

Any suggestions would be appreciated. Thanks!