ERROR: Device 'fenix6xpro' does not support API Level '3.3.0'

Hello,

I'm facing the following error but I really don't understand why.

ERROR: Device 'fenix6xpro' does not support API Level '3.3.0'.
com.garmin.connectiq.common.manifest.ManifestException: Device 'fenix6xpro' does not support API Level '3.3.0'.
at com.garmin.monkeybrains.Monkeybrains.runPRGCompiler(Monkeybrains.java:1476)
at com.garmin.monkeybrains.Monkeybrains.compileApplication(Monkeybrains.java:1335)
at com.garmin.monkeybrains.Monkeybrains.run(Monkeybrains.java:2774)
at com.garmin.monkeybrains.Monkeybrains.simpleMain(Monkeybrains.java:342)
at com.garmin.monkeybrains.Monkeybrains.main(Monkeybrains.java:371)

As far I know fenix6xpro supports api level 3.3.0 as shown here https://developer.garmin.com/connect-iq/compatible-devices/

What's wrong with my configuration, any suggestion?

thank you for your help.

giovanni