Error P16-33-20032001 in FERMAX 9401

Good morning, I have a fermax 9401 and a ring intercom, followed all the steps for the correct installation. However, when doing the test I get error P16-33-20032001.

Does anyone know how to solve it?

I called customer service and they told me to separate the 2.4 wifi from the 5g.

I have also called my internet company and have done what the customer service girl told me without the expected results.

Can somebody help me?

Solved.

At least for me, the P16-33-2003201 error is resolved by connecting the ring intercom to a 2.4 Wi-Fi.

This wifi should only be 2.4.

It is not worth it to be 2.4/5G or 5G, it has to be a 2.4 channel only