using wpt public instance with API Key

Hello,
I am running the following scripts on public instance using an API key.
The script is executing till 2nd navigation command and then it stops.
When I run it manually using public instance, it worked fine.
Any idea why is it failing?

setEventName Target-PLP
navigate Comforters
setEventName Amazon-PLP
navigate https://www.amazon.com/b/ref=s9_acss_bw_cg_BBCT_2b1_w?node=2224405011&pf_rd_m=ATVPDKI...B7Y&pf_rd_t=101&pf_rd_p=44d9b4ae-85c2-4df4-bf14-dfb0d13b8ffe&pf_rd_i=1057792
setEventName Walmart-PLP
navigate Robot or human?
setEventName Wayfair-PLP
navigate Wayfair | Comforters & Comforter Sets You'll Love in 2022