Can you please write what response you got from chipmixer for our further reference. It's a reputable site and I m sure there support will help you in finding your coins. Just let us know there response. Thanks.
The transactions probably already got confirmed as the
mempool cleaned out a bit to the 3 sat/byte range.
Last time something like this happened, ChipMixer bumped the fees of their unconfirmed transactions:
Today upon creation of chips, one transaction got delayed because mempool grew up quickly. It left our transaction with much lower fees than others and all new transactions had higher and higher fees.
We have bumped the fee for it and it is confirmed now. Please check your wallet. Private keys are already imported so Electrum should notice confirmation. If that's not a case, try to recover session using session token and reimport keys.
If you still have a problem, please contact us by email and provide deposit address and/or session token, we will help.