Here are some advices on how you can attempt to solve the issue:
👉Make sure that your device has enough available storage to complete the export. You can manage it via your device Settings - General - iPhone Storage.
👉Close other apps running in the background but are not in use. Lots of the opened Apps may influence the App's efficiency.
👉Try another export option. Try exporting your project without animation.
👉Delete and re-install the most recent version of the Lift App. The outdated version of the App may include some unsolved issues.
If the issue still persists, contact our support team. We kindly advise you to provide us the video recording while encountering the issue, so we could take a look into the issues straight away.