Fix new troubles causing digital problems (9)

I believe the answer is:

hangnails

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'digital problems' is the definition.
Although both the answer and definition are plural nouns, I can't understand how one could define the other.

'fix new troubles' is the wordplay.
'fix' becomes 'hang' (hanging is a kind of fixing).
'new' becomes 'n'.
'troubles' becomes 'ails' (as verb).
'hang'+'n'+'ails'='HANGNAILS'

'causing' is the link.

Can you help me to learn more?

I've seen this clue in The Hindu.

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