How to restore graph

Hi,
Been having the dreaded lag/latency issues with Virgin SH3 so now in modem mode with a TP-Link Archer C7 router.
Trouble is the graph has now turned red and can't find any ICMP settings anywhere.
Can someone tell me what to change please?
Thanks

my graph

Edited by Miggs (Sun 10-Feb-19 10:19:08)

The Firewall setting in the TP-Link router . Whether it is called an ICMP setting or just "Allow pings" or similar I don't know.

Thanks but I can find no such setting.

Using the manual from this page:
https://www.tp-link.com/us/products/details/Archer-C...

Try going to Advanced-> Security -> Settings

Ensure the "ignore ping packet from WAN port" is NOT CHECKED.

Then check the IP address that the Archer has been given by Virgin as it WILL BE DIFFERENT to the IP address your SH3 had - and ensure the BQM is using the right address.

Thank you, the ignore ping was not checked.
Don't see any option to alter the IP in BQM, does it not just use the Internet IP address that I see on the status page?
I started a new graph once the new router was installed.

Sorted now,
Thanks all

So what was it?