Hi @polkadotimages . What is the error you get? Does the browser page timeout or wrong admin password?
What model router is it?
Turn router off and on to see if that clears the lockout. The ip address is 192.168.1.1.
If not, use a paper clip to factory reset the router. Press in the clip until the lights flash. All settings back to original. Wifi names and passwords and admin password. This should let you login again.
You can let the router auto-configure which takes a little while or do the settings yourself.