@ Yazhu_Yue It happened to me too! But I spoke to the app in messages, I went to give the review on the appstore to let them know and when I went back in it was gone.
Obviously I had saved it in my library, the first time it showed that it didn't exist and the second time her profile appeared as the creator... I didn't have time to take a screenshot after all I went to complain directly to the app... (Yes, I could do everything on it from what I saw, don't worry, I didn't do anything but if that had happened for longer I would have accidentally deleted it, after all this tags are familiar because a long time ago they had already replaced the same space as I did, but I changed it and it went back to normal... Until today (just letting you know here because I saw that I'm not the only one)