Ibond gifting option

My husband and I have maxed out 10k each for Ibonds, both our back door roths and 401k/403b for the year and are looking to where we can park the money for the rest of the ear. We wanted to put a couple thousand dollars more in ibonds with the gifting options, to make use of the high rate that we can get till oct 28, but are unable to do so due to some glitch in the system. Is this a real thing or has anyone else been able to go around it?