@Rigby What is the model no., hardware and firmware version of your TP-Link device? Please share with us screenshots of the Tether App and Web Interface for comparison, refresh the page before saving...

@codenber Hi, in bridge with AP mode, the TL-WA801ND IP address should be in the same subnet as your main router, so it should be 192.168.1.X as well and ensure there is no IP conflict. If it still...

@Jene Hi, this screenshot doesn't include the real band the router is using, please click Advanced on the top, then you will see a Status page where you could find more 3G/4G related information.

@Marek303 Hi, what is the version of your Tether App? We will check again by using the same router and App.

@Jambon_Gris Hi, it is recommended to contact the retailer or local support team to see if they could provide part RMA or have spare rear cover.

@Funcorner Hi, upon checking, your current firmware is for Archer MR600(PLPLAY) 2.0, a customized firmware for ISP Play in Poland, that is why it cannot install common EU version firmware. It is...