Access from PythonAnywhere denied

I'm using tripit api for personal use and has previously hosted an app on Heroku. Now I decided to switch to www.pythonanywhere.com. But I get 
```
Access Denied
You don't have permission to access "http://api.tripit.com/v1/list/trip/past/false/page_size/100" on this server.
Reference #18.54e1dd17.1666693604.426b167c
```
How can I get access to the api?