I have to say your videos are not clear, there is no dialog and the responses you give here and other places are sarcastic and insulting to the your customers.
It would be most helpful if your web site explained in very plain english just how to upload large files, and or, now here;s a brilliant idea, figure out a way to incorporate this in your external program which your so proud of and just really is essentially useless with over 25 slider files because one just keeps getting error messages over and over again she you try and upload it. You state clearly that your program will do an unlimited amount of slides, so far this has not been the case. You can not get the filse to upload.
Buyers should be aware of this as it is not at all clear or easy to do. I have yet to successfully get a large number of slides up on my site. Many hours of trying, and hours of watching long and terrible videos that explain nothing!
When people spend a great deal of money on programs that are supposed to be easy to use it and they are not, people are going to ask questions and to have a developer come back with some of the responses I have seen posted here is quite frankly, rude.
All people want is some help with the problem they are having, some clear direction and some help in solving their issue, not a smart assed response.
So try and be a little patient and understanding with your customers and try and understand that what is seemingly clear to you may not be to your customers.