My internet comes via a Huawei 5G CPE Pro 2 WiFi6 Dual Band Router, using an EE 5G simcard. This drops out on a frequent basis, and I read one reason is that it's a hardware issue common to the Huawei router and can be resolved by turning off the wifi and using a different router connected via ethernet cable to serve as the wifi router. I've therefore bought a TD-W9970 for this purpose, turned off the Huawei wifi, connected via ethernet etc. Followed the instructions in the manual as per the "already have a modem" section in terms of switching it to Wireless Router mode, but I'm stuck at the last step. The instructions simply end at "click Add to finish this setup", but there's a whole page of options and I'm not sure what I need to have chosen.

I'm not sure exactly which part of the last step is what is blocking me, so these are my queries. Is PPPoE is the right internet connection type for this kind of connection? For the username/password, should I be using those from EE, from Huawei, or from TP-link? I've tried what I can find online for each of these but none works. Basically everything I enter gives me an error code 5656 / VLAN ID already exists.

I also appreciate it could be something else entirely. Any advice gratefully received

Thanks

Matt

EDIT: I should note, the Huawei router is one I bought myself, it was not one that came as part of an EE mobile broadband package