diff --git a/custom_components/adaptive_cover/config_flow.py b/custom_components/adaptive_cover/config_flow.py
index 400bf7f..2ae62f8 100644
--- a/custom_components/adaptive_cover/config_flow.py
+++ b/custom_components/adaptive_cover/config_flow.py
@@ -606,16 +606,15 @@ async def async_step_update(self, user_input: dict[str, Any] | None = None):
                 CONF_MIN_ELEVATION: self.config.get(CONF_MIN_ELEVATION, None),
                 CONF_MAX_ELEVATION: self.config.get(CONF_MAX_ELEVATION, None),
                 CONF_TRANSPARENT_BLIND: self.config.get(CONF_TRANSPARENT_BLIND, False),
+                CONF_INTERP: self.config.get(CONF_INTERP),
                 CONF_INTERP_START: self.config.get(CONF_INTERP_START, None),
                 CONF_INTERP_END: self.config.get(CONF_INTERP_END, None),
                 CONF_INTERP_LIST: self.config.get(CONF_INTERP_LIST, []),
                 CONF_INTERP_LIST_NEW: self.config.get(CONF_INTERP_LIST_NEW, []),
-                CONF_INTERP: self.config.get(CONF_INTERP),
                 CONF_LUX_ENTITY: self.config.get(CONF_LUX_ENTITY),
                 CONF_LUX_THRESHOLD: self.config.get(CONF_LUX_THRESHOLD),
                 CONF_IRRADIANCE_ENTITY: self.config.get(CONF_IRRADIANCE_ENTITY),
                 CONF_IRRADIANCE_THRESHOLD: self.config.get(CONF_IRRADIANCE_THRESHOLD),
-
             },
         )
 
@@ -696,6 +695,10 @@ async def async_step_vertical(self, user_input: dict[str, Any] | None = None):
                         },
                     )
             self.options.update(user_input)
+            if self.options.get(CONF_INTERP, False):
+                return await self.async_step_interp()
+            if self.options[CONF_ENABLE_BLIND_SPOT]:
+                return await self.async_step_blind_spot()
             if self.options[CONF_CLIMATE_MODE]:
                 return await self.async_step_climate()
             return await self._update_options()
@@ -791,8 +794,11 @@ async def async_step_interp(self, user_input: dict[str, Any] | None = None):
                 )
             self.options.update(user_input)
             return await self._update_options()
-        return self.add_suggested_values_to_schema(
-            INTERPOLATION_OPTIONS, user_input or self.options
+        return self.async_show_form(
+            step_id="interp",
+            data_schema=self.add_suggested_values_to_schema(
+                INTERPOLATION_OPTIONS, user_input or self.options
+            ),
         )
 
     async def async_step_blind_spot(self, user_input: dict[str, Any] | None = None):
diff --git a/custom_components/adaptive_cover/coordinator.py b/custom_components/adaptive_cover/coordinator.py
index a430938..6a70d24 100644
--- a/custom_components/adaptive_cover/coordinator.py
+++ b/custom_components/adaptive_cover/coordinator.py
@@ -607,16 +607,18 @@ def state(self) -> int:
     def interpolate_states(self, state):
         """Interpolate states."""
         normal_range = [0, 100]
+        new_range = []
         if self.start_value and self.end_value:
             new_range = [self.start_value, self.end_value]
         if self.normal_list and self.new_list:
             normal_range = list(map(int, self.normal_list))
             new_range = list(map(int, self.new_list))
-        state = np.interp(state, normal_range, new_range)
-        if state == new_range[0]:
-            state = 0
-        if state == new_range[-1]:
-            state = 100
+        if new_range:
+            state = np.interp(state, normal_range, new_range)
+            if state == new_range[0]:
+                state = 0
+            if state == new_range[-1]:
+                state = 100
         return state
 
     @property