I am stuck with this same issue with MR3040. Airtel only supplies this 4G modem. If anyone knows how to get Airtel 4G LTE (ZTE MF825) working with MR3040 router let me know. I have sent a request to...

I am having the same issue but MR3040. It does not recognize the USB modem. Same Airtel 4G ZTE modem. Sent a couple of emails to Tp-Link support. Both India and global support. Yet to receive any...