Update app.py

app.py

@@ -25,9 +25,10 @@ HEADER = """
 **Real3D** is a single-view large reconstruction model with self-training on real-world images.
 
 **Tips:**
-1. If you find the result is unsatisfied, please try to change the foreground ratio. It might improve the results.
-2. It's better to disable "Remove Background" for the provided examples since they have been already preprocessed.
-3. Otherwise, please disable "Remove Background" option only if your input image is RGBA with transparent background, image contents are centered and occupy more than 70% of image width or height.
+0. **Important** We noticed the running usually fails if it shows "waiting for GPU". If the result shows as a cube, please re-run it.
+1. If you find the result is unsatisfactory, please try to change the foreground ratio. It might improve the results.
+2. It's better to disable "Remove Background" for the provided examples since they have already been preprocessed.
+3. Otherwise, please disable "Remove Background" option only if your input image is RGBA with a transparent background, image contents are centered and occupy more than 70% of image width or height.
 """