Apple has introduced a change in iOS 14.5 that’s breaking device discovery for many of our integrations. They no longer allow multicast messaging without their new Multicast Networking Entitlement. This is also breaking other broadcast messaging operations like WOL commands.
I have applied for the new entitlement but am still awaiting approval. For the time being, I recommend waiting to upgrade your iPhones & iPads. I will report back here once the entitlement has been approved.