I built my project with SDK 15.0 but for some modifications I migrated to SDK15.3
In my application I use pairing key to secure connections but since migrating to SDK 15.3 the following problem happens
On first connection to each client, my device truly asks for the pairing code and then starts working but when one the clients removes the device pairing information and tries for a re pair to the device the pairing code is not asked and the clients pairs with the device without pairing code.
It is worth mentioning that this problem shows itself on windows or mac operating systems and the device works fine with nrf connect app.
Does anybody experiance this problem before? What can I do about it? I really need migrating to SDK 15.3.