Ok yes, you are working with an older version of mcOS (firmware) that could be causing this issue.

Please update the device to the newest version using your mcDongle and mcOTA. You can check out this video that gives you an idea of the process.

The video is a little older and we use the mcMod120 as the example but the process is the same. You need to download the newest firmware file from our website (https://www.mcthings.com/products/mcdemo205/) and then download mcOTA (https://www.mcthings.com/products/mcota/) . You will then connect to the device using the mcDongle and mcOTA which then allows you to update the firmware using the newest version you just downloaded.



*Keep in mind, when you press 'search' in mcOTA, you then need to power the device to make it 'discoverable' to the mcDongle. You can either plug the 205 into USB or put the jumper on the battery pins to power the device

After you update the device, try to connect to the device through the gateway and let us know how it goes
Thanks