Unable to login code 15

i just bought the game on PlayStation5 but when I want to play it gives me “ there was a problem logging in code 15”

I already connected my battlenet account to my PlayStation network and I already restored the licenses.

I also logged out and back in on my PlayStation account, but none of this seems to fix it.

Does anyone please know what to do because I can’t find anything online either?

Hola yo juego en Play4 y también me paso, pero luego todo funciono.