Supporting all existing browser versions on several operating systems can be very difficult. As a web developer you’ll often receive support tickets of functionalities that aren’t working (correctly) on a website. You can start checking different browser versions, for example with a virtual system like I described in a previous post. But if you know the specific version and OS of your client, it’s much easier to debug!
Now the question is how to get correct information of somebody who doesn’t know a lot of IT. Support Details can help you with this. Send the link to the client so they can submit the form with all the necessary details. It’s possible to add a paramater to the url so your own e-mail address is prefilled: http://firstname.lastname@example.org