Quick GDPR Sanity Check for using AI Chatbot and Cloud Storage

Hi everyone,

I have a quick question regarding GDPR compliance for an educational web app I'm developing. I'm considering using Puter.js for a couple of features:

1. AI Chat: Using https://developer.puter.com/ to power a conversational helper.
2. User Data: Using https://docs.puter.com/KV/ to store a user-selected username and their learning progress (e.g., completed lesson IDs).

I plan to implement a consent screen that clearly states the 16+ age requirement for using these cloud features, as mentioned in their terms.

Given that the app would be sending chat messages and storing basic user data (username/progress) on Puter's servers (I think outside EU), are there any obvious GDPR red flags I should be aware of with this implementation?

Any insights would be greatly appreciated. Thanks