The terminal is still open 24/7 for a single departure leaving at 20:35. This from the airport operator in their Covid 19 Q&A section
Q/ Are flights still operating?
A/ Air transport links are considered a key service under current Government guidance, which we continue to follow in full.
With an answer like that how can they shut the terminal or maybe that answer was given a month ago when the terminal was busier. It will be interesting if they do close the terminal to understand the reasons why when this flight is considered a key service.