In case anyone else has the same problem I did. My MAC did not contain the characters that the OP listed, but I was still not able to get my Google Home Mini to join my IAP network.
I have an IAP 225.
My android phone running the latest Google Home app could find the home mini just fine, but when it tried to push the wifi settings to the phone the home mini never would join the network.
Initially the error I was getting was that it wanted me to check my network name. I disabled all Broadcast optimization on my SSID from the advanced configuration of the SSID and the home app changed its error to having me check my password.
My final fix was to change my IAP to "prefer 5Ghz" instead of "Force 5Ghz" under the RF settings. At that point, the Google Home Mini was able to join my network just fine.
I suspect that it was programmed to only join in 2.4ghz for wider compatibility, but once it did join the network I found that it had already moved over to a 5gig channel, so changed my RF settings back to force 5GHz.
Hope this helps others.