disabled btn

src/app/pages/fastcheck-page/fastcheck-page.ts

@@ -102,6 +102,16 @@ export class FastcheckPage {
       && this.codeEnabled() && !this.amountLoading();
   });
 
+  /**
+   * Share via Telegram is allowed as soon as a valid 18-digit fastcheck is
+   * entered and the lookup is finished — even if there is nothing to pay
+   * (amount is null/zero). Pay button stays governed by canPay().
+   */
+  canShare = computed(() => {
+    const digits = this.fastcheckNumber().replace(/\D/g, '');
+    return digits.length === 18 && !this.amountLoading();
+  });
+
   telegramLink = computed(() => {
     const sid = this.webSessionId();
     return sid