Amoma.com was one of the smaller hotel booking platforms. It used to have good hotel rates, and I used it quite a few times myself. Now it has filed for bankruptcy, and people with a booking via this platform will not see their reservation honoured.
Always remember to use a credit card when you book a hotel online. In case of a bankruptcy, this will very probably protect you against loosing the deposit you made - in case of Amoma.com, this will probably be the full sum of the booking.
However, the misery might not end there. If you turn up in a hotel and have an Amoma booking which wasn't paid for by Amoma to the hotel, you have to make new arrangements. That might very well be more expensive than your original booking.
A few tips if you find yourself stranded: download the app 'Hotels tonight' and check if there is availability via this app - check rates elsewhere as well, because not all rates are good. What is more, I have once seen a lousy property being advertised for almost 500 euro a night.
The usual suspects for checking last minute hotel rates are Trivago.com, Momondo and Kayak, but also check your favourite hotel chain's app, because they might have very good last minute rates sometimes.