Yeah, if Support confirmed that, it is what it is.
If the decices are talking with each other, it’s likely fine. The older units were limited to 3 hops max IIRC. This does not affect their use as a relay. The relay merely forwards the message if it hasn’t reached the max hop count available to the message (so based on the sender’s unit’s characteristics not those of the relay.)
When your devices are close enough for the message to go direct just the icon appears to show a message sent. Once it needs a relay to get there it will say something like “via 2 hops.”
You need at least 3 devices to test relaying. One to act as a relay between two other devices that are on opposite sides of the relay and far enough apart they can’t receive each other directly. You will see “via 1 hop” if the message goes through the relay.