Add another back button on instructions page

gethelp.py

@@ -1,12 +1,12 @@
 import streamlit as st
 
 
-def add_back_button():
+def add_back_button(key):
     def fn():
         st.session_state.screen.state = "start"
 
     st.button(
-        "Back", help="Get back to the start screen", on_click=fn, key="help_get_back"
+        "Back", help="Get back to the start screen", on_click=fn, key=key
     )
 
 
@@ -326,5 +326,6 @@ def add_help_content():
 
 
 def help_page():
-    add_back_button()
+    add_back_button(key="help_get_back")
     add_help_content()
+    add_back_button(key="help_get_back2")  # names must be unique