Having problem saving videos – PromptSmart Pro - Teleprompter Review

The videos I took using selfie mode was not saved into camera roll. I tried to relaunch app several times, changed video and script settings, tried different time length of videos... None of them worked. I use an iPhone XS plus. This feature used to work fine just a month ago.
Review by kamalturk on PromptSmart Pro - Teleprompter.