The Context Aware Anchor activity is sometime timed out exceeded, sometime successful in one situation

Hi everyone,
I used The Context Aware Anchor activity to get the data in the website. Sometime, It had an error: timed out exceeded, but when I ran it again with the same situation, It was unexpectedly sucessful. I tried changing the Timeout or WaitForReady but it wasn’t as expected. The problem is sometime It’s sucessful, sometime not.
Can everyone solve this problem? Thanks so much.