Dear @auroide,

auroide wrote

I have a V3.2 cpe510 with updated firmware but there is not "region" for wireless frequency and there is not "test mode" I only have a limits of DFS frequency that not solve my problem with compatibilty with other cpe and client router.

The TP-Link CPE sold in Italy may be the EU version which complies with CE regulation, so that your CPE510 only provides 5G Band3 DFS channels (100-140).

For the compatibility problem with other CPE/router, may I know the model and firmware of your other CPE?

If the other CPE/router support 5G Band3 DFS channels, you may change the channel accordingly to get it connected.