In Chrome, put this in the browser address bar: chrome://settings/passwords?search=autofill
In Firefox, put this into the browser address bar: about:preferences#privacy
In MS Edge, put this in the browser’s address bar: edge://settings/passwords:
Once the saved password values are removed, close the existing browser session and open a new session. This is to ensure that the browser is not using any cached data.
Are you using a saved bookmark in your browser? If so, try using a direct URL to the site rather than the icon on the desktop. The site’s address may have changed.
Try typing the URL into a new browser session:
You could also try googling the website and then selecting it from the results: