UC a LCWRA payments

Hi hope someone can answer a simple question.

We have just received a letter today stating that my partner is entitled to LCWRA. I know there is a extra payment.

I work full-time and we get UC top up on wages as my partner is unable to work.

Will we get this extra payment? Or will me working effect this?
Also I see if could be back dated if so is it backtaed to 3 months after you submitted your first sickline?

The letter is extremely vague and gives no information

All help appreciated

Thank you :blush: