Tell your landlord something is broken, and see what happens after.
The Issues tab is how you tell your landlord something is wrong, and follow what happens next.

Your issues are grouped into Open and Resolved. Report an issue starts a new one.
Each row shows the problem and its status; Your reply needed means something is waiting on you.
Open an issue to see the whole conversation.

Depending on how your landlord has set things up, you are either talking to Alfred, their assistant that handles issues around the clock, or to your landlord directly.
Either way, answer the questions — the clearer you are, the faster it moves.
If a visit is being arranged, give real times you are free.