Ads galore on devices after installing. Is this to be expected? Does it need to run a few days?

Help
14

OK here you go. And thanks for helping. Netgear c7800 firmware 3.01.38

1
12374×924 154 KB

2
22373×591 68.4 KB

3
31100×793 60.1 KB

test2
test21669×804 189 KB