Cant save

I made an entire video and made all the tiny video clips to go inside of it and it was working really well at first aside from the ads and such but then I finished it and... It wouldnt let me save my video?!? So I tried to do all the options, I texted it to myself, I tried saving it to notes, I tried posting it to Instagram. And I know it has nothing to do with my storage because I have plenty of storage and it was nothing to do with my little video clips because I had already had them saved before I could even make the big video. Then, the big video deleted after I left the app and I deleted all the short video clips before i realized it would never let me save so now I cant make the same video again. I need a different app.

:)katzzz(: about VidClips - Perfect Movie Maker