Fix Map Route Issue

I'm looking for a freelancer who can fix a map route issue on my web application that uses Google Maps. The issue is related to the route display, and I need someone who has experience in resolving such problems. The ideal candidate should have the following skills and experience:

- Proficiency in Google Maps API
- Extensive knowledge of web application development
- Experience in troubleshooting and fixing map route display issues
- Strong problem-solving skills

If you have the skills and experience required for this job, please submit your proposals.

Data is downloaded to my website from an external provider each day. An example of this data is here: https://www.dropbox.com/sh/xbi2l3mih79fycz/AAAxbWa-lacncKYjkAketf_Ba?dl=0

My ferry planner is showing the entire route at any given time. But what I need is only to show the trip. I have attached my planner (red version) and also attached the official Translink Planner which is the way it should look. Note, Translink are the providers of the information and their tool access the same information, so I believe my issue is entirely possible to resolve.

The Translink website is here (This is not my website) https://jp.translink.com.au/plan-your-journey/journey-planner/results