Hi crcbarbosa01rur, welcome to Thunkable! 
Be sure to check out How to ask Great Questions v2.0, the Community Guidelines, and our Getting Started Guide to make the best of your Thunkable Community experience!
We’re happy to help but need some more information. Could you explain further about the SplashScreen API?
If you are receiving an error when uploading your AAB file to the Google Play Console, could you share a screenshot of that? It is impossible for us to help without more information.
Thank you!