[HELP] I can't make AP work with PoE

Hi all. I have a Cisco rv345 and just bought an Ubiquiti Ap Ac Pro.

The switch says that ports 1 through 4 and 9 through 12 are PoE.

I tried connecting the AP to those ports but it doesn't turn on. Used both Cat 5 and Cat 6 UTP cables.

What am I doing wrong?

Please help me!