fix: webhook url for signature check

lnbits/static/i18n/en.js

@@ -268,7 +268,9 @@ window.localisation.en = {
   webhook_stripe_description:
     'One the stripe side you must configure a webhook with a URL that points to your LNbits server.',
   webhook_square_description:
-    'On the Square side configure a webhook pointing to your LNbits server.',
+    'On the Square side configure a webhook pointing to this exact LNbits URL.',
+  square_webhook_url_hint:
+    'Must exactly match the Square notification URL. LNbits requires the /api/v1/callback/square path.',
   access_token: 'Access Token',
   location_id: 'Location ID',
   square_location_id_hint:

lnbits/static/js/components/admin/lnbits-admin-fiat-providers.js

@@ -21,12 +21,6 @@ window.app.component('lnbits-admin-fiat-providers', {
         this.formData?.paypal_payment_webhook_url ||
         this.calculateWebhookUrl('paypal')
       )
-    },
-    squareWebhookUrl() {
-      return (
-        this.formData?.square_payment_webhook_url ||
-        this.calculateWebhookUrl('square')
-      )
     }
   },
   watch: {