I'm adding 2 new AP121's. According to the QuickStart guide as soon as I plug them into the BR100 they are supposed to connect to HiveManager however after 45 minutes they have not been discovered. I've add the AP's SN and activated the licenses. We are a small restaurant and only have one other AP121 which has been operating for about a year. I noticed that the lights on the back of the BR100 are not flashing or the new AP's so I switched cables but no change.
Thanks everyone for the great support and ideas. I was able to connect with Aerohive support and after quite a long time trying to diagnose the problem they had me check power supplies and found that they were the wrong AC adapters. AC adapters that were sent out were for 110/120/320/340. instead of AH-ACC-PWR-24W-US. The AP120 power supplies do not supply the required amps for the AP121 so the AP just stays in amber flashing and never boots up. Hopefully with the correct power supplies the AP's will connect.
Eek. The AP120 took a 48V external power supply whereas the AP121 takes a 12V power supply. From bitter personal experience (due to an inability to follow a wire from one end to the other), plugging an AP120 power supply into an AP121 may well cause irrepairable damage. If you find the APs don't power on with the correct power supply, you may well have to get the APs replaced.