If you're experiencing issues with the Trenitalia website or app crashing, here are comprehensive steps to troubleshoot and potentially resolve the problem:

1. Clear Browser Cache and Cookies:
- Navigate to your browser settings and find the section for clearing browsing data.
- Clear the cache and cookies, then restart your browser and attempt to access the Trenitalia website again. This can often resolve loading issues.

2. Try a Different Browser:
- If you're using Safari, consider downloading and using a different browser like Google Chrome or Opera.
- Some users have reported success using the Opera browser with its VPN service, which can sometimes bypass restrictions that cause access issues - learn more.

3. Check the Website Status:
- Visit services like "Is It Down Right Now" to check if the Trenitalia website is experiencing outages or server issues. Temporary downtime can lead to access problems - learn more.

4. Using the App:
- If the website is down, consider downloading the Trenitalia app from the App Store if you haven’t already. Make sure it’s updated to the latest version, as updates may fix bugs that cause crashes - learn more.

5. Disable Browser Extensions:
- Some browser extensions, particularly ad blockers or privacy-focused ones, can interfere with website functionality. Temporarily disable these extensions and check if the problem persists.

6. Use a VPN:
- If you’re not located in Italy, some users have reported that connecting through a VPN to an Italian server helps overcome regional access issues - learn more.

7. Check for Maintenance Announcements:
- Sometimes, scheduled maintenance can cause temporary website outages. Look for any announcements regarding this on official Trenitalia channels or user forums - learn more.

8. Contact Customer Support:
- If issues continue, consider reaching out to Trenitalia’s customer support for assistance. You can find contact information via their official FAQs or support pages - learn more.

By following these steps, you should be able to effectively troubleshoot and perhaps resolve any crashing issues you're experiencing with Trenitalia.