When you are connected to your router/modem directly, does the issue persist ? Try disabling Cloudflare security for a moment to test if that's causing the issue. If it's not, then try using DNS...

If you have a power adapter with similar parameters (voltage, amperage) you can test by swapping the original power adapter and see if that's the issue. Apart from that contacting local support would...

@paulcanning This is from C50 HW v4. Your WebGUI may look different, but the location should be similar:

@agony For that FW it is stated (in release notes) that you won't be able to downgrade to a previous FW release. Try with these wireless settings and see if you are able to connect (for both 2.4 and...

@safaka If it's not with a custom FW provided by your ISP these settings should be located as follows: Enable WDS FW upgrade

TL-WA855RE is not on the list for OneMesh capable devices. In my previous post I pointed you to a link with all OneMesh capable devices from TP-Link. So you can use that TL-WA855RE as a RE, but you...