Hi @vincnet,
after enabling ‘Local Network’, have you tried to terminate the spacedesk viewer app then re-open it?
As an alternative to wireless connection, you may also connect by USB cable. For further details, please refer to our user manual’s “iOS USB Cable Connection” topic (https://manual.spacedesk.net/iOSUSBCableConnection.html).
As for the expiry,
spacedesk can still be used but it will display black and white images.
A new version will be available that has extended expiry date.