add note in paxcounter_orig.conf

src/paxcounter_orig.conf

@@ -4,7 +4,9 @@
 //
 // --> adapt to your needs and use case <--
 //
-// Note: After editing, before "build", use "clean" button in PlatformIO!
+// Notes:
+// 1. After editing, before "build", use "clean" button in PlatformIO!
+// 2. Clear NVRAM of the board to delete previous stored runtime settings (pio run -t erase)
 
 // Device options
 #define VERBOSE                         1       // set to 0 to silence the device, 1 enables additional debug output