problem with photo

I started the process but stopped it after 5% and 5% is these images did not work to me.
That is, in a post to show in the frame of the photograph, and his name, but nothing appeared.
I could not deal with it and I had to add all the photos again (5%), or by the fact that it stopped the process?

Now I’m afraid to use the plug so as not to lose the pictures, or anything like that happened?

I’m waiting for the anserw, becouse i would like to regenerate 🙂

https://ww.wp.xz.cn/plugins/regenerate-thumbnails/