The advertiser of the extended_advertising example builds an incorrect advertisement, as explained below:
In src/advertiser/app.c, demo_setup_ext_adv function builds the advertising data. It inserts an incomplete AD structure after the local name and before the manufacturer specific data.
To correct this, the following code should be removed:
adv_data[amout_bytes++] = 0x11;// length 17 bytes
adv_data[amout_bytes++] = 0x06;//more_128_uuids