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do we still need to provide cohabitation.
No.if still answer is yes. (would marriage certificate not be enough?)
Anything in your names, joint or addressed individually, ie HMRC letters, tenancy agreement, utility bills, council tax, TV licence etc etcplease i you could advise,what sort of cohabitation proof they need. as we do not have any join bills. or bank statements.
ILR qualification date is 24-08-2020, but she can apply 28 days before that date.
What date did she enter the UK?? Long residence ilr starts counting from date of entry to the UK not the visa issue date.