I can't really look at anything that I can't reproduce. It is like taking your car to a mechanic and telling him the car works fine but your wife said it didn't start and asking him to tell you what is wrong with the car.
He would have to know what your wife did differently that caused the problem and I don't have that key piece of information. I don't even have an error message to go by. All I have is that it "hangs". But most things that hang will give an error eventually. I don't even have that.
If I had an error message then I might be able to use that to try to reproduce the problem. The first thing you have to do is to fix a problem is to reproduce it. If you are trying to fix a problem you can't reproduce then how do you test if your fix worked? All issues are reproduce-able.
Can you get the name of someone that has the issue and have them reproduce it? It might have something to do with the browser or phone they are using. It might be an issue with a bad credit card and it not handling failed payments properly. You just don't know where to start until you can reproduce the issue.