The main advantage of jwt is that is stateless, so it reduces load on database and or caching layer when checking user session. Alongside being able to share the public key to verify the token across different services
It’s challenging to incorporate in a country where you are not personally tax resident. Permanent establishment and controlled foreign corporation rules make it complicated to manage it correctly
Top of the funnel increase is great, but I would be keen to understand whether overall revenue went up. Sometimes free tier attract the wrong type of customers