Well, there are problems in uploading and i think i cover most of them at my previous posts. A good idea is to close all tabs before submitting your post at the platform, upload only one image and put the rest in a steemit post by editing it.

I dont know what is your idea about ntopaz, maybe you think it as a website with 100 people stuff, but the truth is that there are 2-3 people trying to do their best. Keep in mind that everything in steem is an experimental stage, there are problems, there are bugs, there are bad descisions etc. Things can not be solved once and for all, it takes a little patience and trying. This is what we all do:) Try to take my advice and i am hoping for the best:)