Armature Problem

Hey guys.
I’m fairly new to Blender, and I was making a rig of my Minecraft character. I would post a video of this problem on YouTube, but the rig is for animations to be posted on my channel, and I want to surprise my viewers. I’ve been using basic Bones, Parenting, and the Snap-to-Grid feature to imitate the pixelated character. But whenever I switch to a different frame, render the image, or save and come back, my figure’s parts get scrambled everywhere. I made sure it wasn’t the Parenting that was messing it up, I’ve looked into the Bones to see if the problem was there, but I just can’t figure it out. This problem has persisted from the time I finished the head of the character. I’m frustrated because I can’t close my Blender window, for fear of losing my progress. I made sure it was

If it helps, here are some screenshots.

Before altering:

After changing frames:

Thanks, Nyak