@IvanD Still that proves nothing definitively. I would have excluded a FW issue from the very beginning. You could email to support.forum@tp-link.com to ask for further suggestions and help.

@IvanD Uploading third party SW on your device will void the waranty, but since your device is not under waranty there's no need to worry about that. But if you haven't done this before there's a...

@Brigx If your device is with different FW region or HW version then it probably the device won't let you upgrade with FW for another region or HW version: " Please upgrade firmware from the local...

@Europcar10 On the bottom sticker there should be the FW region and HW version of your device. If TD-W8961N is EU region and HW v3 then here's the download link.

@IvanD I understand your concerns. But there's nothing else you can do about this issue. Maybe if you could borrow a spare router from a friend while doing the migration to minimize the impact on you...

@rariyuda What makes you think it's only a user mode ? Do you have these fields in your router user interface: Most of the new router models don't offer changing the username, thus entering oonly...