1) The animations seem slow. I found it distracting as I watched them meander into / out of frame or focus. Can they be sped up some? Especially anything dealing with text...it was painfully slow to watch.
2) Your wife has a gorgeous voice and does a great job! There are a few instances where I detected awkward pausing (perhaps cutting audio to sync / match with the animation?), but for the price it couldn't have been beaten!
3) Be mindful of English. The statement "Not just for big corporates" sounds odd.
4) Include more screenshots of your application. When talking about being able to use it on any device you should overlay images of your application from those devices onto the outlined images of the various devices. Give us a look at how your app appears on mobile / tablet / desktop.
5) Parts of the template don't seem to mesh with what the voiceover is talking about. Prime example: talking about linking to payroll systems (starting around 1m35s). The image is a lightbulb. Doesn't make sense. Perhaps that's just the limitation of the template.
6) Overall time is quite lengthy. We live in bite sized chunks of time and sitting through a 3m video is difficult. See if you can chop it down to just the basics. Give us a taste of your app and then direct us to your site to dig in for more details.
Great job though considering the budget!