Just returned from a trip staying in a Hilton with captive portal and using an AR750S v3.201. The Slate was in router mode using factory defaults except for the SSIDs and keys. Everything set up as expected, connected to the hotel WiFi and signed into the captive portal. But after about a day, the slate would “freeze” and completely drop its WiFi signals with the LEDs off. It had to be rebooted and re-connected (including a new scan I think) to get back to normal operation. That happened repeatedly, and was NOT due to the portal needing to be refreshed. I once caught the failure happening and the LEDs turned to solid on for a short time and then off. I have a WiFi scanner app on my phone and there was no signal from the slate on either 2.4 or 5G. I tried connecting the slate to the Hotel’s 2.4G and 5G signals and auto-scan on and off and the “freezing” continued. I did not have time to do any trouble shooting. If I had to guess I would suspect a memory leak.