Growatt integration - Invalid authentication

Hello everyone!
I´m new in this HA world and know nothing about this programmer language :stuck_out_tongue: But so far i´ve had success instaling HA on my macbook air.

I have solar panels with Growatt inverter and i´m having a problem trying to integrat it on HA.
The first step is insert server.growatt.com credencials but it comes out a messagem: “invalid authentication”. but credencials are correct when I put them directly on the Growatt page and in the mobile app.

does anyone can give a clue what should I do to fix it?

Thanks in advance
Regards