[Observium] Possibly Alert filter bug?

Hello

We have some Check Point firewalls and if i make an Alert check to their memory usage and try to associate it to these firewalls, after the SAVE CHANGES the check doesn't shows any associated items even if i set the hostname directly or use the exact hardware type of it like the attached pictures.

If i add the "Device Vendor in Check Point" it shows our other Check Point-made firewall but not that is in the attached picture (where the hardware is 15600 or the hostname is **fw01 .

Is it a bug or just i made a mistake?

Thanks Laszlo