Got a telephone call from vw dealer car ready. Nothing wrong with flap. We have a video of it working. I said it was definitely stuck must be intermittent. No they said it’s fine. So went out late afternoon to pick up. Service advisor brought car round and said there you go. Tried flap stuck. Oh dear he said I will get mechanic. He came still stuck. Eventually got it open but I said I want new parts fitted. They agreed and now waiting.