Problems when I try to LOG IN to Forums.

I am using a password manager (PM).

Recently, when I try to Log-In, using this PM, in the Log-In windows in the banner at the right-hand top of the screen,
I get the (failure) reply shown in the attachment.

The attachment panel, as well as telling me about the number of Log-In attempts remaining, shows another box which I can use to Log-In.

When I use the PM in this new box, Log-In is successful. Which indicates that the PM has the correct data, which I have also verified.

I have been able to Log-In by entering the user ID and password manually in both the banner and the box in the attachment.

Any ideas, please.Attachment 13145