Bonding problems with nRF52810

Dear Community,

We want to use bonding to connect our app to the nRF and create a personal account.

So all your devices will have the same UUID. If the device never connected to a phone, it advertises, and anyone can connect. The first time it connects, the devices pair (enables encryption) and bond (stores the encryption keys for later use). That way, the next time the device is turned on, it will use something called directed advertising, indicating that it will only connect to already known devices that are previously bonded. 

But when using the NRF SDK and want to bond it gives a error. 

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