Lcwra payments

Does this mean I will get backdated payment from last year based on providing sick notes since I joined uc or bescuse they didn’t even send me a health form to fill out until June this year will they say it starts from then ? 

Also , the sick notes I was providing was all just dates Inputting into my journal bescuse of COVID-19 it only states on your journal “provide for note” so I wrote doctors name and dates ( every 3 months my gp had given me ) is this input on journal of this basic information classed as my evidence ? 

Any advise would be appreciated