My BQM stopped working at exactly modnight ?

I upgraded to FTTP in March, I continued to use my Fritzbox 7590 and I kept the same Static IP.
All has been working with my BQM until yesterday, I noticed it was showing a ramping up packet loss that then reset, but at exactly Midnight the BQM just went completely red, just like I was off-line, but my internet is working fine. My Sam Knows box is showing zero packet loss although I did see a spike in DNS Response time at 3am ?

https://www.thinkbroadband.com/broadband/monitoring/...

Any help gratefully received

Check your "static" IP. Likely it's changed.

That was the 2nd thing I checked after my Internet connection, but it is still the same

Next thing would be to check your IP is pingable from the internet. That's all the BQM is doing.

Try this: https://dnschecker.org/ping-ipv4.php

Interesting a 100% failure ?

That's the issue then. As to why, that's a bit of a mystery!

Assuming that router settings haven't been changed to prevent replying to ICMP packets, maybe the router is just bugged and a reboot might sort it?

Anything in the router logs?

Just checked my Fritzbox Filters and the following filters are enabled, NetBIOS, Teredo & WPAD ?
Looking at Event Logs, the Internet connection one is blank ? Other event logs are there but nothing at or around midnight ?

Mine has done the same.
Static IP unchanged (I've pinged it)
No changes to the router

Weird

I'm with Plusnet I wonder if they may have done something ?

So am I