I have just buy a brand new TP WR902ac V3 latest Firmware, because I want to stream in the hotel (I stay 5 night per week there) some films via Chromecast. 

The hotel wlan does not allowed a connection between the different wifi devices (OK, I would assign the security also in this way). If I switch the Switch on the the device to the preferred position and select Range extension as working model, the WR902ac connect to the Wlan, but has no internet connection. 

The interesting think is, that the different APs (with the same SSID) have a parallel Transmission with no SSID, but the same channel with the same strongest signal) 

I have try all possibilities, but also from the diagnostic page, there is no external IN page to reach. I have also try to set a fix IP address... no positiv result. Same as Smart IP... The guest hotel network can be reached via SSID and Passwort. A direkt connection which any devices (Mobil, Tablett, PC) works without any problems. 

About that, that the Wr902ac has not Internet access, so all clients, which have a valid connection, haven't an internet connection, too. 

What can I do additional? 

Downgrade? Upgrade to a beta version (if any available and I received an access...)?