I’ve bought a Hombli smart bulb, and I try to connect it with an iPhone 13 and an older iMac), but everytime I try to connect it, it says: “Device Adding time-out”. In the troubleshoot it’s suggested that I might be using 5 gHz instead of 2,4 gHz. How/where can I check if this is indeed the case? (And the follow-up question would be: how do I make sure it’s connected to 2,4 gHz?