If you’re deploying FortiWeb in one-arm reverse proxy mode, you’ll need
to enable source NAT so the return traffic flows back through FortiWeb,
avoiding asymmetric routing. In this setup, FortiWeb translates the
client IP to its own before forwarding...
Sounds frustrating! Since the LAN stays green but Wi-Fi drops, it might
be a config issue. Try resetting the AP to factory settings, then set it
up fresh through FortiCloud or the web interface. That usually helps
with connection problems.