I have stated on my laptop my wlan password once, now I unfortunately no longer know how was there's a way to see my own wlan password on the laptop, because the router is no longer recognizes the numbers are blurred.
Laptop Windows 10.
Can you still read the device password from the router? Then go to the router menu (via a Lankabel!) And change the Wi-Fi password there.
Why has the router thrown you, once logged in, the device logs in automatically.
It is because you are denied the access of others (for example, parents, neighbors, roommates), this goes beyond:
"lock out" the PC (access denied)
Change of the PW
To come back in you need first the device password of the router.
You can have the WLAN password displayed directly on the computer:
https://www.pcwelt.de/...03672.html
However, if it is not the right thing, then it is only about the configuration of the wireless router (log in, where the password is displayed).