I've gotten this comment many times myself, so you may be wondering, what should I do?
First, you have to decide if the delivery was really a problem or if it is just this student. I have had students tell me that I talk too fast, and others say I talk too slow. Obviously, I can’t make both of these groups of students happy, so I decided to simply talk at the speed that is comfortable for me. In the case of delivery speed, it is an easy fix since the video player allows students to playback the video at 0.75x or 1.5x, too. I also mention this in my introduction video, and the complaints about delivery speed have decreased.
If you get complaints about your dialect or accent, you do have to remember that you are serving an international audience. I am an American and I had a British student complain because my slides used the word “color” instead of “colour”. Again, you can’t please everyone, so pick a format and go with it. I’ve also had complaints that my “accent” is hard to understand because I speak “American-ese”. If you have a thick accent, it can be beneficial to take some vocal courses that help you minimize your accent, since this will make you easier to understand regardless of where your student is in the world. Often, international students seek out “American” or “British” accents because they are more common and easy to understand in the global marketplace.
If you get complaints that your delivery is “monotone” or “boring”, you should take that criticism and work to improve your delivery. Students want to be engaged and entertained. Try to use different peaks and valleys to your voice and tell stories as you teach. This will go a long way in creating engaging delivery.
Hopefully this helps a bit for some of you who are new to the platform and building your first courses. Remember, you can't please everyone, but do take the time to stop and think if they have a valid point!
Jason