diff --git a/src/Socket/messages-send.ts b/src/Socket/messages-send.ts
index 942d0608..484e7328 100644
--- a/src/Socket/messages-send.ts
+++ b/src/Socket/messages-send.ts
@@ -1137,13 +1137,27 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 				metrics.interactiveMessagesSent.inc({ type: buttonType })
 
 				try {
+					// Use nested structure: biz > interactive > native_flow
+					// This matches the working Pastorini/Astra-Api implementation
 					;(stanza.content as BinaryNode[]).push({
 						tag: 'biz',
 						attrs: {},
 						content: [
 							{
-								tag: buttonType,
-								attrs: getButtonArgs(message)
+								tag: 'interactive',
+								attrs: {
+									type: 'native_flow',
+									v: '1'
+								},
+								content: [
+									{
+										tag: 'native_flow',
+										attrs: {
+											v: '9',
+											name: 'mixed'
+										}
+									}
+								]
 							}
 						]
 					})