Always wrapped at first in a cloak of obscurity? Not a feature of our website (7)

I believe the answer is:

paywall

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'obscurity? not a feature of our website' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'always wrapped at first in a cloak' is the wordplay.
'always' becomes 'ay' (archaic term for 'always').
'at first' says to take the initial letters.
'in' indicates putting letters inside.
'a cloak' becomes 'pall'.
The initial letter of 'wrapped' is 'w'.
'ay'+'w'='ayw'
'ayw' inserted within 'pall' is 'PAYWALL'.

'of' is the link.

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I've seen this clue in The Guardian.

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