I wrote a bunch of study materials and practice tests for passing the Chinese language exam equivalent of the TOEFL in China. It was doing well for several year

I wrote a bunch of study materials and practice tests for passing the Chinese language exam equivalent of the TOEFL in China. It was doing well for several years, but the site broke (or was hacked) suddenly and is now making zero dollars. I have no idea how to fix it, but the business was completely passive aside from sending out the study materials, which were all digital. Essentially, I'd get a purchase and have the files sent to the customer, costing me a couple minutes for the $20 or so from the sale. About one sale per day equates to around $500 a month. The site is/was https://hsktests.com/ https://hsktests.com/.