Problem

The door does not open

To open a door you need an active contract in the space and access to that particular door.

What you see

The door is not in your list, the slider cannot be used, or you get an error after pulling it.

Two things have to be true at the same time:

You hold an active contract or a role in this space.
Your space has released that particular door to you. Access is set per person and per door.

On top of that come technical reasons: no lock is fitted to the door, the lock is unreachable, or the battery is empty.

If the door is missing from your list, your space has not released it to you. Ask them to.
If your application is still open, wait for the approval. Before the contract is active you are not a member.
If your contract has ended, access ends with it.
If the app shows a warning about a weak battery, report it to your space.
If it says Hold on, the door was operated a moment ago. A few seconds later it works again.
Check your internet connection. The command travels through the server to the lock, not over Bluetooth.

A check-in or a booking for today is not a condition for opening. See Check-in and door are two things.

Ask your space first. They own the locks and the access grants, and only they can add you.