If in case they will get back again, you are very welcome as you've proven to be an honest casino.
Maybe, just keep your site's domain and who knows, later on, you will find a better way to run your casino.
They should retain their domain for continuous branding in case they got partnership or they have investors willing to invest, it's good that they let us know that they are shutting down, they are very much welcome to come back here they have zero complaints and I'm sure they've got a lot of players coming here.
Nothing last forever and everything should have an end.
Well, it is a good site and as what above said, you can come back anytime when you are ready to start a new gambling site and want to repeat the good history as before.
Hopefully, you do not sell your domain to other people because your domain is related to you and your reputation in the gambling industry.
I hope you can stay healthy in real life, have success in your new business online or offline, have new people around you to work and achieve your goals.