AW set in lost mode by someone else

Hi

A week a go, someone hacked my iCloud account and set all my iDevices+my Apple Watch in lost mode. I've managed to fix both my iPhone and iPad, but my Apple Watch is still in lost mode, asking for a code to unlock it. The clock has also been disconnected from my iPhone, and won't connect again when I try connecting from the Bluetooth-menu.

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Anyone who knows what to do?

<Edited by Host>