@graywoulf i dunno if ya can ignore the warning.. but ya could try this
you could check this option in Opera to see if opera is do 'n protection or may be the new router perhaps..
go to the O Menu > Settings > Advance > Privacy and security - scroll down to the words called (Protect me from malicious sites) and see if the slider switch is Enabled - slide switch to the left disables it..
opera may be throwing up that popup you have been see 'n..
if the (Protect me from malicious sites) is Enabled..
Disable it - then go to that link and see if it still shows it.. if it does not show.. consider also - To not leaving it disabled for long periods of time..
00549cd4-f994-4e5b-a543-513a03deb2ee-image.png
if it does show - then the new router may have protection built in it or a software feature to help protect..