1) Yes
2) No, the preview shows the same problem that’s in the final product.
3) Yes, in fact now that I tried it without transparency the export works.
The only problem is that I was trying to get this GIF to be transparent, do you (or anyone) know why Photoshop would have problems exporting a transparent GIF? Actually is it a problem with Photoshop, or does Photoshop have a good reason for not exporting GIF as transparent? Thanks for the response btw.