Keepassxc gives me an incorrect PW when logging in to device with browser

KeepassXC has been improving all the time and I now only use this app for passwords and a good deal more in the notes when I am setting up multi-SSID APs.
Today I have come across a problem. The wrong password is entered on a web log in for one device. If I copy and paste the PW from the keepassxc screen it works so how may I re-set the data so that it works as it should.