Sorry, but I have to disagree.
Glitches and bugs are unavoidable, but when it comes to Dreamstime they normally fix them in a matter of hours. Those guys are good, really good.
Grandpa have you tried submitting to IStock for example? How did it go? No glitches, no bugs, no errors? Smooth and easy?
That would be something!
Not to mention the time it takes IStock to fix any of their glitches. Unfortunately, of those, they have many.
And nobody seems to be able to fix them. In months.
Compared to that, Dreamstime is not only a lot more professional, but one of the best as well.