On the face of it that gives the LL the right to act for the tenant in either a revision request or an appeal. It looks like a more in-depth version of a third party authority, almost making the LL an appointee. But as you haven’t (presumably) made them an appointee they haven’t accepted the responsibilities that come with it.
Possibly the more important question will become whether the LL can provide the missing information, since without that it seems unlikely there will be a HB award – that’s also something this authorises them to do, so if they have failed in that….. It may depend on what information the LL can actually provide, I doubt they’ll have payslips, for example.
I think I would accept and submit an appeal from them; ultimately if they succeed you are helping the tenant by reducing rent arrears.
