This is more of a PR problem because you should have prepared your clients before having a case and assure them after on how you’ve taken measures. However, it sounds very strange to me that people got that scared that they decided not to come to your store at all. I have clients that reported sick employees but their sales weren’t impacted that much.

If you don’t mind me asking, what exactly do you sell? Maybe you are seeing a drop in revenue because of the type of product/service that you have and you are feeling the impact a bit later which is normal for most businesses.

Another scenario would be that you haven’t adapted your strategy to new customer needs. I work with a restaurant and they had to close during covid BUT they started offering take-out so I have adapted the ad copy, keywords, ad extension, landing pages etc. They didn’t lose any business.