That`s good news! I found this about the protocol
“The hub uses the LogMeIn Xively protocol over HTTPS to talk to the cloud, but is not [obviously] vulnerable to any kind of MiTM attack and exposes no open ports whatsoever on the LAN. I’ve managed to get hold of a spare hub, but not done anything with it yet. It’s all Microchip stuff, based around a 32bit/80MHz PIC32MX695F MIPS SoC with 512KB flash, 128KB RAM, 10/100 Ethernet and USB2 OTG. Also on the board are a WRF24J48MA 2.4GHz wireless module (to communicate with the flap) and obligatory ENC424J600 Ethernet controller to manage it. The PCB appears to have an 8-pin FPC serial connector and JTAG interface which both look promising. Having said that, if it’s possible to discover details of the wireless connection between hub and flap then a pure software implementation of the hub could be achievable.”
"I found the FCC test report for the connected flap: https://fccid.io/XO9-IMPD00003
The main report https://fccid.io/XO9-IMPD00003/Test-Report/Test-Report-3666579
This lists the “intentional radiators” in the kit, namely the RFID at 126 and 133 kHz, and the 2.4 GHz radio for transmitting to the hub. That is listed as 802.15.4 using O-QPSK modulation. https://en.wikipedia.org/wiki/IEEE_802.15.4
That’s Zigbee - or at least something close to it. With the right SDR setup we may be able to decode the frames."