If you would like to help improve the Free Bet Calculator by reporting any problems that you encounter, then if possible please include as much information as you can about the ‘make & model’ of the browser, operating system and device that you are using (e.g. Google Chrome 37, Android 4.4, Samsung Galaxy S5). Even if you only know partial details (e.g. iPhone 5s), then that is often sufficient to help narrow the field, and allow the problem to be reproduced and fixed where possible.
Problems often only affect certain browsers or devices, and can be caused by anything from a browser bug, to a non-standard device feature. Browser and device details are therefore invaluable when attempting to resolve any issues.