What to do after hacking Wi-Fi?

Question

WiFi

Good evening ladies and gentlemen!
My WiFi has been hacked! Tell me, please, did I do everything to eliminate the consequences of hacking
1. I reset the router settings.
2. Changed the password for the router settings
3. Changed the password for Wi-Fi
4. Checked if the firmware is up to date
5. Checked the computer for viruses
What else?
(The story of how I realized that I was hacked)
Today was an ordinary boring day, I installed Skype from the official site.
I haven't used the computer since. Then I watched a couple of videos. Then I didn't use my computer again. And then I decided to play Steam. It was about 4 pm. Wifi was still available at that time (because messages from social networks constantly came to the phone).
After an hour of playing, I log out of steam. I take the phone in hand - but there is no Wi-Fi. Rebooted the router - no wifi. I look at the available networks - a new Killfish-free Wi-Fi has appeared. I think it's strange! We don't have killfish nearby! Again I turn off the router - oops, the new network is gone.
In short, I determined that my network was called Killfish and made public.
I'm trying to go into the router settings - I can't. I reset the router settings - I go in, I change everything. I see in the event log (it's a pity the date and time have been reset) and so on for 5 pages. My password has never been set to default. Protection is always WPA2-PSK(AES) - because. the other is trite and not :)
That's all!

Answer 1

The first step is to disable the WPS point on the router (you were most likely hacked through it), especially if you have a router before 2016.
Here is an article on how it turns https://habr.com/ru/company/xakep/blog/143834/
I still do it quietly on neighboring routers.
Further, as described in previous answers:
1. Update the firmware.
2. Set a password on the web face of the router (this will protect you if at least they picked up a WPA hash), the hacker will only be able to listen to traffic and use the Internet for free :), but you can find out this through the web face from the logs and change the password without any special consequences for yourself.

Answer 2

Change the administrator password (to a long one), update the firmware, configure the Firewall. Everything.

Answer 3

Judging by the screenshots from the comments, they are connecting to you from the outside. It is worth disabling remote control in the settings and prohibiting pings from the WAN, as well as asking the operator to change the IP. Just as suggested above, be sure to disable WPS