As onrender.com is the only free hosting site that specifically supports Singapore server hosting, it is used because Bangladesh Railway has restricted access to the e-Ticketing website from outside Bangladesh, except for Singapore.
However, on the free plan, this hosting site freezes the hosted website if no user visits it within a 15-20 minute interval. As a result, you may experience a loading delay of around 45-50 seconds when accessing the site. After that, it will work fine.
You will be redirected to Bangladesh Railway Seat Availability (trainseat.onrender.com), where you can check train seat availability and plan your journey.