it has nothing to do with Chipmixer as unconfirmed transactions based on the mempool.
Problem was chip funding transaction was stuck in mempool due to average miner fee over 900 sat/B.
We have solved it by Child-Pay-For-Parent - spending a chip with higher fee accelerates spending other chips.
Fake ChipMixer google ad is still online.I just checked on my side to make sure and it is absolutely still there. I reported it once more, although I doubt that it's going to change anything since Google does not seem to actually care about it. Another problem I just noticed was that the fake website also has a valid SSL certificate, which could instill a false sense of security to anyone visiting that site and would result in them getting scammed. I do not know what else to do besides keep reporting it to Google, though.