We have numerous android devices, and I have never "noticed" any increase in ads.

There are apps, at least on Android devices, which shows you the strength and frequency of nearby neighbors Wi-Fi. You can then select a frequency of your router which is not near the same or near as one of your neighbors.

Not all routers expose that level of configuration.
Not all users will want to muck with that level of configuration.
If you disable the router’s ability to automatically choose a channel your neighbor may choose the same channel tomorrow.
If it doesn’t matter that your neighbor chooses the same channel then there is no need to force a channel in the first place.

The solution to the problem was with the device, not the router.

see all wifis around you with channels used
 

I found a cool very tiny program that will show you all the wifis around you, their signal strength and what channels they use.
It is called wifiinfoview (wifiinfoview.com)
After viewing the nearby congested router channels, you can log into your router and change the channel.
Choosing an unused channel worked great for me and helped with hiccups I was having.
You can go their web site to download, but I had difficulty with downloading it so I have attached a working version here.
I don't think it even needs to be installed on your computer.
I put it on a usb stick and tried running it from there and it worked fine.
I have no affiliation with them.
As always, you are on your own!

EDIT: I uploaded it twice but don't see any way to get it here?

Most people, 99% of all wifi users, don’t have their router/wifi setup properly. All of these 99% users use what the ISP provides which is garbage.
Every router can be accessed by the home owner, every router. Look on the bottom of the router and you will see the userid and password to use to get into the router to set it up correctly.

1st issue, what band are you using on your device? There are 2 WiFi bands and your iPhones/ipads/macs (I will never touch an android or windows device) should be using the more robust band for better speeds.

2nd issue, you should only have 1 ssid not the default 2, then your smart devices like apple devices will pick the better band when possible or drop down to the lower performing band when the signal strength is low, like going into a back bedroom or outside.

3rd issue, go into the router and change both bands to use auto channel configuration. If you have the smarts to look at the different channels on each band, then you can change auto to the more appropriate band, but I would leave it in auto mode.

If your device experiences a connection issue, go into your device’s network settings and refresh your network connection.

The poster you're trying to help, already resolved it. They just needed to "forget" and then "find" their wifi connection on their device. There was nothing wrong with their router, which you'd know by reading that the OP was ONLY having trouble with one device, and all other devices were connected just fine. Updating their operating system caused their device to misfire when reconnecting to their wifi, that's all it was, no fancy things needed to do.

Kaboom
 

did obb just drop the mic?!

I switched to Spectrum and like it much better, also less costly.