Solved Thunderbird 128 - viewing and changing password- new security?

Hi, It used to be relatively easy to access saved passwords for my email accounts held on Thunderbird.

But now there's this:


and I have no idea what's required there.

It is not, for example, the email address and password of the account selected.

I have posted a question in the Mozilla community and attempted a search.

The above is so vague it's absurd. Ideas welcome. Thanks.

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Approaching this from a different direction and finding a more explicitly worded prompt which let me remove this requirement, it seems it's likely it's looking for the PC login credentials.

Not at all clear from that one!

Anyway, I now have access to my Tbird passwords.