In this situation, I would take a long-term view and that view would include this what benefit there is to you to keep the site going is bearing in mind that the guy is going into liquidation starting up again. If you keep the relationship going, it may be that you get the ongoing work which may be valuable to you. There is no guarantee and that is commercial judgement for you.
Legally, you are not obliged to provide a service for which you are not being paid or which you are not going to be paid for.
You say that you pay for the whole server hosted a number of sites on it but the reality is that the cost of that hosting is divided between the number of sites and hence, the proportion cost for all the other sites is higher.
What you can’t do is take the site down and put a sign up which says that the bill has been paid.
In cases like this, I have known sites suddenly and miraculously have a glitch which needs remedying and would you believe, the website company cannot resolve the glitch because of course, they are not going to get paid!
If this is not already covered in your terms and conditions whereby you will immediately switch a site off as soon as a bill is not paid and overdue , for example 14 days, then you need to immediately insert that into your terms and conditions. Wouldn’t help you on this particular occasion but for future occasions it does mean that you wouldn’t need to have asked the question. You also need to put in that you are not liable for any losses as a result of that action.
What might want to consider doing is to let the site continue to take the orders so that they cannot allege any loss of revenue from your actions but restrict the use of it.
Ultimately, the company has no money to pay you and regardless of what you do, it has no money to pay you, it cannot litigate with you and take you to court.
Can I clarify anything arising from this?
I am happy to answer specific questions arising from this?
Please rate the service positive. It’s an important part of the process by which experts get paid.
We can still exchange emails.