Even ignoring any ownership issues, it's an awful service. If you look up "ExpressVPN cancel" you'll find lots of posts and comments from people complaining that they were charged again after cancelling, that the interface makes it difficult to cancel, that they needed to reach out to support multiple times, etc.
Instead:
- Use a different VPN
- Check if you actually need a VPN for your situation
I check this guide from time to time to see if anything has changed with the usual recommendations: