BN-880 GPS and Galileo

I have a BN-880 GPS, connected to an ESP32, which works well but apparently only receives 12 satellites and, in particular, not the Galileo satellites. I have set up the GPS with U-Center and checked the Galileo box but I do not receive any Galileo frames ($GA..). My project requires an accuracy of 0.5m, which I hoped to obtain with Galileo.
Does anyone have a solution?

I have deleted your other cross-post @emmanuel56.

Cross-posting is against the Arduino forum rules. The reason is that duplicate posts can waste the time of the people trying to help. Someone might spend a lot of time investigating and writing a detailed answer on one topic, without knowing that someone else already did the same in the other topic.

Repeated cross-posting can result in a suspension from the forum.

In the future, please only create one topic for each distinct subject matter. This is basic forum etiquette, as explained in the "How to get the best out of this forum" guide. It contains a lot of other useful information. Please read it.

Thanks in advance for your cooperation.