Why aren't my nodejs server webhooks functioning properly?

I have a nodejs server enabling my Shopify store APIs. It includes few Webhooks:

app.post(“/api/new_customer_webhook”, newCustomerWebhook);

app.post(“/api/shopify_order_webhook”, shopifyOrderWebhook);

and other APIs, e,g.,

app.get(“/api/customer/:email/get_note”, getNote);

app.get(“/api/customer/:email/update_new_customer_note”, updateNewCustomerNote);

The Webhooks don’t work while the rest are fully functional. Seems something is missing in the nodejs settings.

An important piece of information - the nodejs server location has been updated recently, and after that it stopped working. Maybe I need to restart something?

Can someone direct me how this can be solved.