Here are the steps to edit the follow-up message that automatically sends to people who connect with you on your page:

1) First go to the Pages tab (2nd from the left at the bottom of the app) and click the 3 dots button at the top.

2) Then you will select Edit Follow-Up Messages.

3) You will see the Follow-Up Messages screen now.

4) If you need to edit this, toggle on Create Custom Text Message and click into the text within the message to start editing.

5) Hit Save when you are done!