"Please check your internet connection and try again."
It is pretty annoying that in certain times I get the message "Please check your internet connection and try again.". I am located in Germany and I experience this issue primarily in the late afternoon or early evening at workdays, and in many cases at the weekend, too. If I try it at 4 in the morning, then there is no problem. I want to point out that I do not agree with your message, because my internet connection is working perfectly. I have a connection via cable internet with a downstream of 120 Mbit/s and my upstream is 6 Mbit/s, so the problem is not located on my side. You, SoloLearn, should be honestly and change the message into "our server(s) are busy at the moment". This would be closer to the truth. And this shows me that your server capacities are lacking performance.