farshidheshmati

Thank you for the information.

It is an authentication server required for online play, it is not a game server and will not affect your game ping, that's why it has been whitelisted and unable to be blocked. The server in Europe is your game server.

Very strange, the routing changes, do keep us posted, certainly a unique issue here

We're still improving auto detect, it uses different servers so if it reports lower than what you expect then set it manually. If you're not receiving speeds without the router you'll have to resolve that first, connecting the R2 won't have caused that to happen on the modem

Just fixed it by using auto-setup in Congestion Control and also using finding the best dns for my area using the software called "DNSBench" and set the dns into netduma R2 also into my network connection adapter properties Good luck

Thank you so much

If the default credentials, admin/password or the ones you've set aren't working/they've been forgotten then you'll have to factory reset. It is a security feature to prevent unauthorized access so it has to be that way really.

If you're ever confused or want more information about a feature click the ? icon on the top right of that panel. Congestion Control is the main feature to combat lag/local congestion/bufferbloat, essentially lag happens when your connection is saturated i.e. 100% of the connection is being utilized. By setting the value to 70% for example it ensures that your connection can't be completed used and that prevents lag happening. 
For prioritizing gaming that's where Traffic Prioritization comes in at the bottom of the page.

Hey, welcome to the forum!
I responded to you on Twitter, but I'll also respond here for anyone else wondering.
The CoD servers seemed to change last night, so Ping Heatmap is now out-of-date. We're updating them now, you should see all the servers back later on today!